Merge remote-tracking branch 'remotes/origin/master' into ks-flyway

hapi-fhir-base/src/main/java/org/hl7/fhir/instance/model/api/IBaseEnumFactory.java

@@ -31,7 +31,7 @@ public interface IBaseEnumFactory<T extends Enum<?>> extends Serializable {
 	 * @return the enumeration value
 	 * @throws IllegalArgumentException is the value is not known
 	 */
-    public T fromCode(String codeString) throws IllegalArgumentException;
+	T fromCode(String codeString) throws IllegalArgumentException;
 
 	/**
 	 * Get the XML/JSON representation for an enumerated value
@@ -39,6 +39,11 @@ public interface IBaseEnumFactory<T extends Enum<?>> extends Serializable {
 	 * @param code - the enumeration value
 	 * @return the XML/JSON representation
 	 */
-    public String toCode(T code);
+	String toCode(T code);
+
+	/**
+	 * Get the system for a given enum value
+	 */
+	default String toSystem(T theValue) { return null; }
 
 }

hapi-fhir-base/src/main/java/org/hl7/fhir/instance/model/api/IBaseEnumeration.java

@@ -23,6 +23,6 @@ package org.hl7.fhir.instance.model.api;
 
 public interface IBaseEnumeration<T extends Enum<?>> extends IPrimitiveType<T> {
 
-	// Marker interface
+	default IBaseEnumFactory<T> getEnumFactory() { return null; }
 
 }