docs(forms): exclude internal-only methods and properties from docs (#38583)

Prior to this commit, a lot of internal-only class properties and methods (such as `ngOnChanges`)
of the Forms package directives were exposed on angular.io website. These fields are not expected
to be called externally (they are used/invoked by framework only), since they are part of internal
implementations of the following interfaces:

* Angular lifecycle hook interfaces
* ControlValueAccessor interface
* Validator interface

Having these internal-only fields in docs creates unnecessary noise on directive detail pages.
This commit adds the `@nodoc` annotation to these properties and methods to keep fields in the
golden files, but hide them in docs.

PR Close #38583

packages/forms/src/directives/abstract_form_group_directive.ts

@@ -52,23 +52,17 @@ export class AbstractFormGroupDirective extends ControlContainer implements OnIn
   // TODO(issue/24571): remove '!'.
   _asyncValidators!: any[];
 
-  /**
+  /** @nodoc */
-   * @description
-   * An internal callback method triggered on the instance after the inputs are set.
-   * Registers the group with its parent group.
-   */
   ngOnInit(): void {
     this._checkParentType();
+    // Register the group with its parent group.
     this.formDirective!.addFormGroup(this);
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * An internal callback method triggered before the instance is destroyed.
-   * Removes the group from its parent group.
-   */
   ngOnDestroy(): void {
     if (this.formDirective) {
+      // Remove the group from its parent group.
       this.formDirective.removeFormGroup(this);
     }
   }

packages/forms/src/directives/checkbox_value_accessor.ts

@@ -47,14 +47,14 @@ export const CHECKBOX_VALUE_ACCESSOR: any = {
 })
 export class CheckboxControlValueAccessor implements ControlValueAccessor {
   /**
-   * @description
    * The registered callback function called when a change event occurs on the input element.
+   * @nodoc
    */
   onChange = (_: any) => {};
 
   /**
-   * @description
    * The registered callback function called when a blur event occurs on the input element.
+   * @nodoc
    */
   onTouched = () => {};
 
@@ -62,28 +62,23 @@ export class CheckboxControlValueAccessor implements ControlValueAccessor {
 
   /**
    * Sets the "checked" property on the input element.
-   *
+   * @nodoc
-   * @param value The checked value
    */
   writeValue(value: any): void {
     this._renderer.setProperty(this._elementRef.nativeElement, 'checked', value);
   }
 
   /**
-   * @description
    * Registers a function called when the control value changes.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnChange(fn: (_: any) => {}): void {
     this.onChange = fn;
   }
 
   /**
-   * @description
    * Registers a function called when the control is touched.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnTouched(fn: () => {}): void {
     this.onTouched = fn;
@@ -91,8 +86,7 @@ export class CheckboxControlValueAccessor implements ControlValueAccessor {
 
   /**
    * Sets the "disabled" property on the input element.
-   *
+   * @nodoc
-   * @param isDisabled The disabled value
    */
   setDisabledState(isDisabled: boolean): void {
     this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);

packages/forms/src/directives/default_value_accessor.ts

@@ -75,14 +75,14 @@ export const COMPOSITION_BUFFER_MODE = new InjectionToken<boolean>('CompositionE
 })
 export class DefaultValueAccessor implements ControlValueAccessor {
   /**
-   * @description
    * The registered callback function called when an input event occurs on the input element.
+   * @nodoc
    */
   onChange = (_: any) => {};
 
   /**
-   * @description
    * The registered callback function called when a blur event occurs on the input element.
+   * @nodoc
    */
   onTouched = () => {};
 
@@ -99,8 +99,7 @@ export class DefaultValueAccessor implements ControlValueAccessor {
 
   /**
    * Sets the "value" property on the input element.
-   *
+   * @nodoc
-   * @param value The checked value
    */
   writeValue(value: any): void {
     const normalizedValue = value == null ? '' : value;
@@ -108,20 +107,16 @@ export class DefaultValueAccessor implements ControlValueAccessor {
   }
 
   /**
-   * @description
    * Registers a function called when the control value changes.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnChange(fn: (_: any) => void): void {
     this.onChange = fn;
   }
 
   /**
-   * @description
    * Registers a function called when the control is touched.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnTouched(fn: () => void): void {
     this.onTouched = fn;
@@ -129,8 +124,7 @@ export class DefaultValueAccessor implements ControlValueAccessor {
 
   /**
    * Sets the "disabled" property on the input element.
-   *
+   * @nodoc
-   * @param isDisabled The disabled value
    */
   setDisabledState(isDisabled: boolean): void {
     this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);

packages/forms/src/directives/ng_form.ts

@@ -137,10 +137,7 @@ export class NgForm extends ControlContainer implements Form, AfterViewInit {
         new FormGroup({}, composeValidators(validators), composeAsyncValidators(asyncValidators));
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * Lifecycle method called after the view is initialized. For internal use only.
-   */
   ngAfterViewInit() {
     this._setUpdateStrategy();
   }

packages/forms/src/directives/ng_model.ts

@@ -149,8 +149,8 @@ export class NgModel extends NgControl implements OnChanges, OnDestroy {
   _registered = false;
 
   /**
-   * @description
    * Internal reference to the view model value.
+   * @nodoc
    */
   viewModel: any;
 
@@ -213,13 +213,7 @@ export class NgModel extends NgControl implements OnChanges, OnDestroy {
     this.valueAccessor = selectValueAccessor(this, valueAccessors);
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * A lifecycle method called when the directive's inputs change. For internal use
-   * only.
-   *
-   * @param changes A object of key/value pairs for the set of changed inputs.
-   */
   ngOnChanges(changes: SimpleChanges) {
     this._checkForErrors();
     if (!this._registered) this._setUpControl();
@@ -233,11 +227,7 @@ export class NgModel extends NgControl implements OnChanges, OnDestroy {
     }
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * Lifecycle method called before the directive's instance is destroyed. For internal
-   * use only.
-   */
   ngOnDestroy(): void {
     this.formDirective && this.formDirective.removeControl(this);
   }

packages/forms/src/directives/number_value_accessor.ts

@@ -48,15 +48,15 @@ export const NUMBER_VALUE_ACCESSOR: any = {
 })
 export class NumberValueAccessor implements ControlValueAccessor {
   /**
-   * @description
    * The registered callback function called when a change or input event occurs on the input
    * element.
+   * @nodoc
    */
   onChange = (_: any) => {};
 
   /**
-   * @description
    * The registered callback function called when a blur event occurs on the input element.
+   * @nodoc
    */
   onTouched = () => {};
 
@@ -64,8 +64,7 @@ export class NumberValueAccessor implements ControlValueAccessor {
 
   /**
    * Sets the "value" property on the input element.
-   *
+   * @nodoc
-   * @param value The checked value
    */
   writeValue(value: number): void {
     // The value needs to be normalized for IE9, otherwise it is set to 'null' when null
@@ -74,10 +73,8 @@ export class NumberValueAccessor implements ControlValueAccessor {
   }
 
   /**
-   * @description
    * Registers a function called when the control value changes.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnChange(fn: (_: number|null) => void): void {
     this.onChange = (value) => {
@@ -86,10 +83,8 @@ export class NumberValueAccessor implements ControlValueAccessor {
   }
 
   /**
-   * @description
    * Registers a function called when the control is touched.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnTouched(fn: () => void): void {
     this.onTouched = fn;
@@ -97,8 +92,7 @@ export class NumberValueAccessor implements ControlValueAccessor {
 
   /**
    * Sets the "disabled" property on the input element.
-   *
+   * @nodoc
-   * @param isDisabled The disabled value
    */
   setDisabledState(isDisabled: boolean): void {
     this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);

packages/forms/src/directives/radio_control_value_accessor.ts

@@ -112,14 +112,14 @@ export class RadioControlValueAccessor implements ControlValueAccessor, OnDestro
   _fn!: Function;
 
   /**
-   * @description
    * The registered callback function called when a change event occurs on the input element.
+   * @nodoc
    */
   onChange = () => {};
 
   /**
-   * @description
    * The registered callback function called when a blur event occurs on the input element.
+   * @nodoc
    */
   onTouched = () => {};
 
@@ -148,29 +148,21 @@ export class RadioControlValueAccessor implements ControlValueAccessor, OnDestro
       private _renderer: Renderer2, private _elementRef: ElementRef,
       private _registry: RadioControlRegistry, private _injector: Injector) {}
 
-  /**
+  /** @nodoc */
-   * @description
-   * A lifecycle method called when the directive is initialized. For internal use only.
-   */
   ngOnInit(): void {
     this._control = this._injector.get(NgControl);
     this._checkName();
     this._registry.add(this._control, this);
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * Lifecycle method called before the directive's instance is destroyed. For internal use only.
-   */
   ngOnDestroy(): void {
     this._registry.remove(this);
   }
 
   /**
-   * @description
    * Sets the "checked" property value on the radio input element.
-   *
+   * @nodoc
-   * @param value The checked value
    */
   writeValue(value: any): void {
     this._state = value === this.value;
@@ -178,10 +170,8 @@ export class RadioControlValueAccessor implements ControlValueAccessor, OnDestro
   }
 
   /**
-   * @description
    * Registers a function called when the control value changes.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnChange(fn: (_: any) => {}): void {
     this._fn = fn;
@@ -201,10 +191,8 @@ export class RadioControlValueAccessor implements ControlValueAccessor, OnDestro
   }
 
   /**
-   * @description
    * Registers a function called when the control is touched.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnTouched(fn: () => {}): void {
     this.onTouched = fn;
@@ -212,8 +200,7 @@ export class RadioControlValueAccessor implements ControlValueAccessor, OnDestro
 
   /**
    * Sets the "disabled" property on the input element.
-   *
+   * @nodoc
-   * @param isDisabled The disabled value
    */
   setDisabledState(isDisabled: boolean): void {
     this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);

packages/forms/src/directives/range_value_accessor.ts

@@ -52,15 +52,15 @@ export const RANGE_VALUE_ACCESSOR: StaticProvider = {
 })
 export class RangeValueAccessor implements ControlValueAccessor {
   /**
-   * @description
    * The registered callback function called when a change or input event occurs on the input
    * element.
+   * @nodoc
    */
   onChange = (_: any) => {};
 
   /**
-   * @description
    * The registered callback function called when a blur event occurs on the input element.
+   * @nodoc
    */
   onTouched = () => {};
 
@@ -68,18 +68,15 @@ export class RangeValueAccessor implements ControlValueAccessor {
 
   /**
    * Sets the "value" property on the input element.
-   *
+   * @nodoc
-   * @param value The checked value
    */
   writeValue(value: any): void {
     this._renderer.setProperty(this._elementRef.nativeElement, 'value', parseFloat(value));
   }
 
   /**
-   * @description
    * Registers a function called when the control value changes.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnChange(fn: (_: number|null) => void): void {
     this.onChange = (value) => {
@@ -88,10 +85,8 @@ export class RangeValueAccessor implements ControlValueAccessor {
   }
 
   /**
-   * @description
    * Registers a function called when the control is touched.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnTouched(fn: () => void): void {
     this.onTouched = fn;
@@ -99,8 +94,7 @@ export class RangeValueAccessor implements ControlValueAccessor {
 
   /**
    * Sets the "disabled" property on the range input element.
-   *
+   * @nodoc
-   * @param isDisabled The disabled value
    */
   setDisabledState(isDisabled: boolean): void {
     this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);

packages/forms/src/directives/reactive_directives/form_control_directive.ts

@@ -54,8 +54,8 @@ export const formControlBinding: any = {
 
 export class FormControlDirective extends NgControl implements OnChanges {
   /**
-   * @description
    * Internal reference to the view model value.
+   * @nodoc
    */
   viewModel: any;
 
@@ -116,13 +116,7 @@ export class FormControlDirective extends NgControl implements OnChanges {
     this.valueAccessor = selectValueAccessor(this, valueAccessors);
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * A lifecycle method called when the directive's inputs change. For internal use
-   * only.
-   *
-   * @param changes A object of key/value pairs for the set of changed inputs.
-   */
   ngOnChanges(changes: SimpleChanges): void {
     if (this._isControlChanged(changes)) {
       setUpControl(this.form, this);

packages/forms/src/directives/reactive_directives/form_control_name.ts

@@ -65,7 +65,6 @@ export const controlNameBinding: any = {
 export class FormControlName extends NgControl implements OnChanges, OnDestroy {
   private _added = false;
   /**
-   * @description
    * Internal reference to the view model value.
    * @internal
    */
@@ -142,12 +141,7 @@ export class FormControlName extends NgControl implements OnChanges, OnDestroy {
     this.valueAccessor = selectValueAccessor(this, valueAccessors);
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * A lifecycle method called when the directive's inputs change. For internal use only.
-   *
-   * @param changes A object of key/value pairs for the set of changed inputs.
-   */
   ngOnChanges(changes: SimpleChanges) {
     if (!this._added) this._setUpControl();
     if (isPropertyUpdated(changes, this.viewModel)) {
@@ -157,10 +151,7 @@ export class FormControlName extends NgControl implements OnChanges, OnDestroy {
     }
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * Lifecycle method called before the directive's instance is destroyed. For internal use only.
-   */
   ngOnDestroy(): void {
     if (this.formDirective) {
       this.formDirective.removeControl(this);

packages/forms/src/directives/reactive_directives/form_group_directive.ts

@@ -86,12 +86,7 @@ export class FormGroupDirective extends ControlContainer implements Form, OnChan
     super();
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * A lifecycle method called when the directive's inputs change. For internal use only.
-   *
-   * @param changes A object of key/value pairs for the set of changed inputs.
-   */
   ngOnChanges(changes: SimpleChanges): void {
     this._checkFormPresent();
     if (changes.hasOwnProperty('form')) {

packages/forms/src/directives/reactive_directives/form_group_name.ts

@@ -165,10 +165,9 @@ export class FormArrayName extends ControlContainer implements OnInit, OnDestroy
   }
 
   /**
-   * @description
    * A lifecycle method called when the directive's inputs are initialized. For internal use only.
-   *
    * @throws If the directive does not have a valid parent.
+   * @nodoc
    */
   ngOnInit(): void {
     this._checkParentType();
@@ -176,8 +175,8 @@ export class FormArrayName extends ControlContainer implements OnInit, OnDestroy
   }
 
   /**
-   * @description
    * A lifecycle method called before the directive's instance is destroyed. For internal use only.
+   * @nodoc
    */
   ngOnDestroy(): void {
     if (this.formDirective) {

packages/forms/src/directives/select_control_value_accessor.ts

@@ -90,21 +90,24 @@ function _extractId(valueString: string): string {
   providers: [SELECT_VALUE_ACCESSOR]
 })
 export class SelectControlValueAccessor implements ControlValueAccessor {
+  /** @nodoc */
   value: any;
+
   /** @internal */
   _optionMap: Map<string, any> = new Map<string, any>();
+
   /** @internal */
   _idCounter: number = 0;
 
   /**
-   * @description
    * The registered callback function called when a change event occurs on the input element.
+   * @nodoc
    */
   onChange = (_: any) => {};
 
   /**
-   * @description
    * The registered callback function called when a blur event occurs on the input element.
+   * @nodoc
    */
   onTouched = () => {};
 
@@ -128,8 +131,7 @@ export class SelectControlValueAccessor implements ControlValueAccessor {
   /**
    * Sets the "value" property on the input element. The "selectedIndex"
    * property is also set if an ID is provided on the option element.
-   *
+   * @nodoc
-   * @param value The checked value
    */
   writeValue(value: any): void {
     this.value = value;
@@ -142,10 +144,8 @@ export class SelectControlValueAccessor implements ControlValueAccessor {
   }
 
   /**
-   * @description
    * Registers a function called when the control value changes.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnChange(fn: (value: any) => any): void {
     this.onChange = (valueString: string) => {
@@ -155,10 +155,8 @@ export class SelectControlValueAccessor implements ControlValueAccessor {
   }
 
   /**
-   * @description
    * Registers a function called when the control is touched.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnTouched(fn: () => any): void {
     this.onTouched = fn;
@@ -166,8 +164,7 @@ export class SelectControlValueAccessor implements ControlValueAccessor {
 
   /**
    * Sets the "disabled" property on the select input element.
-   *
+   * @nodoc
-   * @param isDisabled The disabled value
    */
   setDisabledState(isDisabled: boolean): void {
     this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);
@@ -247,10 +244,7 @@ export class NgSelectOption implements OnDestroy {
     this._renderer.setProperty(this._element.nativeElement, 'value', value);
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * Lifecycle method called before the directive's instance is destroyed. For internal use only.
-   */
   ngOnDestroy(): void {
     if (this._select) {
       this._select._optionMap.delete(this.id);

packages/forms/src/directives/select_multiple_control_value_accessor.ts

@@ -83,25 +83,26 @@ abstract class HTMLCollection {
 })
 export class SelectMultipleControlValueAccessor implements ControlValueAccessor {
   /**
-   * @description
+   * The current value.
-   * The current value
+   * @nodoc
    */
   value: any;
 
   /** @internal */
   _optionMap: Map<string, ɵNgSelectMultipleOption> = new Map<string, ɵNgSelectMultipleOption>();
+
   /** @internal */
   _idCounter: number = 0;
 
   /**
-   * @description
    * The registered callback function called when a change event occurs on the input element.
+   * @nodoc
    */
   onChange = (_: any) => {};
 
   /**
-   * @description
    * The registered callback function called when a blur event occurs on the input element.
+   * @nodoc
    */
   onTouched = () => {};
 
@@ -123,11 +124,8 @@ export class SelectMultipleControlValueAccessor implements ControlValueAccessor
   constructor(private _renderer: Renderer2, private _elementRef: ElementRef) {}
 
   /**
-   * @description
+   * Sets the "value" property on one or of more of the select's options.
-   * Sets the "value" property on one or of more
+   * @nodoc
-   * of the select's options.
-   *
-   * @param value The value
    */
   writeValue(value: any): void {
     this.value = value;
@@ -147,11 +145,9 @@ export class SelectMultipleControlValueAccessor implements ControlValueAccessor
   }
 
   /**
-   * @description
    * Registers a function called when the control value changes
    * and writes an array of the selected options.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnChange(fn: (value: any) => any): void {
     this.onChange = (_: any) => {
@@ -181,10 +177,8 @@ export class SelectMultipleControlValueAccessor implements ControlValueAccessor
   }
 
   /**
-   * @description
    * Registers a function called when the control is touched.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnTouched(fn: () => any): void {
     this.onTouched = fn;
@@ -192,8 +186,7 @@ export class SelectMultipleControlValueAccessor implements ControlValueAccessor
 
   /**
    * Sets the "disabled" property on the select input element.
-   *
+   * @nodoc
-   * @param isDisabled The disabled value
    */
   setDisabledState(isDisabled: boolean): void {
     this._renderer.setProperty(this._elementRef.nativeElement, 'disabled', isDisabled);
@@ -285,10 +278,7 @@ export class ɵNgSelectMultipleOption implements OnDestroy {
     this._renderer.setProperty(this._element.nativeElement, 'selected', selected);
   }
 
-  /**
+  /** @nodoc */
-   * @description
-   * Lifecycle method called before the directive's instance is destroyed. For internal use only.
-   */
   ngOnDestroy(): void {
     if (this._select) {
       this._select._optionMap.delete(this.id);

packages/forms/src/directives/validators.ts

@@ -176,19 +176,17 @@ export class RequiredValidator implements Validator {
   }
 
   /**
-   * @description
    * Method that validates whether the control is empty.
    * Returns the validation result if enabled, otherwise null.
+   * @nodoc
    */
   validate(control: AbstractControl): ValidationErrors|null {
     return this.required ? Validators.required(control) : null;
   }
 
   /**
-   * @description
    * Registers a callback function to call when the validator inputs change.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnValidatorChange(fn: () => void): void {
     this._onChange = fn;
@@ -225,9 +223,9 @@ export class RequiredValidator implements Validator {
 })
 export class CheckboxRequiredValidator extends RequiredValidator {
   /**
-   * @description
    * Method that validates whether or not the checkbox has been checked.
    * Returns the validation result if enabled, otherwise null.
+   * @nodoc
    */
   validate(control: AbstractControl): ValidationErrors|null {
     return this.required ? Validators.requiredTrue(control) : null;
@@ -286,19 +284,17 @@ export class EmailValidator implements Validator {
   }
 
   /**
-   * @description
    * Method that validates whether an email address is valid.
    * Returns the validation result if enabled, otherwise null.
+   * @nodoc
    */
   validate(control: AbstractControl): ValidationErrors|null {
     return this._enabled ? Validators.email(control) : null;
   }
 
   /**
-   * @description
    * Registers a callback function to call when the validator inputs change.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnValidatorChange(fn: () => void): void {
     this._onChange = fn;
@@ -374,13 +370,7 @@ export class MinLengthValidator implements Validator, OnChanges {
   @Input()
   minlength!: string|number;  // This input is always defined, since the name matches selector.
 
-  /**
+  /** @nodoc */
-   * @description
-   * A lifecycle method called when the directive's inputs change. For internal use
-   * only.
-   *
-   * @param changes A object of key/value pairs for the set of changed inputs.
-   */
   ngOnChanges(changes: SimpleChanges): void {
     if ('minlength' in changes) {
       this._createValidator();
@@ -389,19 +379,17 @@ export class MinLengthValidator implements Validator, OnChanges {
   }
 
   /**
-   * @description
+   * Method that validates whether the value meets a minimum length requirement.
-   * Method that validates whether the value meets a minimum length
+   * Returns the validation result if enabled, otherwise null.
-   * requirement. Returns the validation result if enabled, otherwise null.
+   * @nodoc
    */
   validate(control: AbstractControl): ValidationErrors|null {
     return this.minlength == null ? null : this._validator(control);
   }
 
   /**
-   * @description
    * Registers a callback function to call when the validator inputs change.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnValidatorChange(fn: () => void): void {
     this._onChange = fn;
@@ -460,13 +448,7 @@ export class MaxLengthValidator implements Validator, OnChanges {
   @Input()
   maxlength!: string|number;  // This input is always defined, since the name matches selector.
 
-  /**
+  /** @nodoc */
-   * @description
-   * A lifecycle method called when the directive's inputs change. For internal use
-   * only.
-   *
-   * @param changes A object of key/value pairs for the set of changed inputs.
-   */
   ngOnChanges(changes: SimpleChanges): void {
     if ('maxlength' in changes) {
       this._createValidator();
@@ -475,19 +457,16 @@ export class MaxLengthValidator implements Validator, OnChanges {
   }
 
   /**
-   * @description
+   * Method that validates whether the value exceeds the maximum length requirement.
-   * Method that validates whether the value exceeds
+   * @nodoc
-   * the maximum length requirement.
    */
   validate(control: AbstractControl): ValidationErrors|null {
     return this.maxlength != null ? this._validator(control) : null;
   }
 
   /**
-   * @description
    * Registers a callback function to call when the validator inputs change.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnValidatorChange(fn: () => void): void {
     this._onChange = fn;
@@ -549,13 +528,7 @@ export class PatternValidator implements Validator, OnChanges {
   @Input()
   pattern!: string|RegExp;  // This input is always defined, since the name matches selector.
 
-  /**
+  /** @nodoc */
-   * @description
-   * A lifecycle method called when the directive's inputs change. For internal use
-   * only.
-   *
-   * @param changes A object of key/value pairs for the set of changed inputs.
-   */
   ngOnChanges(changes: SimpleChanges): void {
     if ('pattern' in changes) {
       this._createValidator();
@@ -564,19 +537,16 @@ export class PatternValidator implements Validator, OnChanges {
   }
 
   /**
-   * @description
+   * Method that validates whether the value matches the the pattern requirement.
-   * Method that validates whether the value matches the
+   * @nodoc
-   * the pattern requirement.
    */
   validate(control: AbstractControl): ValidationErrors|null {
     return this._validator(control);
   }
 
   /**
-   * @description
    * Registers a callback function to call when the validator inputs change.
-   *
+   * @nodoc
-   * @param fn The callback function
    */
   registerOnValidatorChange(fn: () => void): void {
     this._onChange = fn;