p.
  <span class="location-badge">exported from <a href="/angular2/forms">angular2/forms</a></span>
  defined in <a href="https://github.com/angular/angular/tree/master/modules/angular2/src/forms/model.js#L132">angular2/src/forms/model.js (line 132)</a>

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  Defines a part of a form, of fixed length, that can contain other controls.
  
  A ControlGroup aggregates the values and errors of each <a href="angular2/forms/Control-class"><code>Control</code></a> in the group. Thus, if one of the controls 
  in a group is invalid, the entire group is invalid. Similarly, if a control changes its value, the entire group 
  changes as well.
  
  `ControlGroup` is one of the three fundamental building blocks used to define forms in Angular, along with 
  <a href="angular2/forms/Control-class"><code>Control</code></a> and <a href="angular2/forms/ControlArray-class"><code>ControlArray</code></a>. <a href="angular2/forms/ControlArray-class"><code>ControlArray</code></a> can also contain other controls, but is of variable 
  length.
  
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  h2 Members
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    h3 constructor

    
    pre.prettyprint
      code.
        constructor(controls:StringMap, optionals:StringMap = null, validator:Function = Validators.group)
    

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  .l-sub-section
    h3 contains

    
    pre.prettyprint
      code.
        contains(controlName:string)
    

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  .l-sub-section
    h3 controls

    

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  .l-sub-section
    h3 exclude

    
    pre.prettyprint
      code.
        exclude(controlName:string)
    

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  .l-sub-section
    h3 include

    
    pre.prettyprint
      code.
        include(controlName:string)
    

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