Bug 153040 Template definition should be removed after the report item is deleted
Steps to reproduce: 1.New a report, extends lib.label 2.Convert the label to template report item, and revert it back to the report item 3.Delete the label 4.Remove the included library Expected result: Library can be removed Actual result: A BIRT exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:2.1.0.v20060808-0630 Error Code:Error.LibraryException.LIBRARY_HAS_DESCENDENTS Error Message:The library "Lib" can no be dropped because it has descendents "NewLabel" in the current module.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/core/UserPropertyDefn.java
* @param choiceArray
	 *            choice array to be set.
	 */
	public void setChoices( UserChoice[] choiceArray )
	{
		if ( choiceArray == null )
		{
			details = null;
			return;
		}
		
		ChoiceSet choices = new ChoiceSet( null );
		choices.setChoices( choiceArray );
		details = choices;
	}
	/**
	 * Checks whether <code>displayName</code> matches any items in the choice
	 * set for an extended choice property type on a user defined choice set. If
	 * <code>displayName</code> exists in the choice set, return the name of
	 * this choice. Otherwise, return <code>null</code>.
	 * 
	 * @param module
	 *            the module
	 * @param displayName
	 *            the candidate display name
	 * @return the choice name if found. Otherwise, return <code>null</code>.
	 */
	protected String validateExtendedChoicesByDisplayName( Module module,
			String displayName )
	{