code: public static Identity createExtendedIdentity(String extendedIdentifier,
  			Charset c) throws MarshalException {
  		return createExtendedIdentity(DomHelpers.toDocument(extendedIdentifier, c));
  	}
docs: Create an extended {@link Identity} identifier.
  
  @param extendedIdentifier the extended identifier XML
  @param c charset used for encoding the string
  @return the new extended identity instance
  @throws IfmapException