Bug 188027 PasteAction is diabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
* to the design/library, the design/library is returned. Otherwise, the
	 * module cached in the <code>DesignElementHandle</code> is returned.
	 * 
	 * @return the effective module of the element. Can be null.
	 */
	protected Module getEffectiveModule( )
	{
		return module;
	}
	/**
	 * Returns the overridden value of the specified property given its internal
	 * name.
	 * 
	 * @param propName
	 *            the name of the property to get. Can be a system-defined or
	 *            user-defined property name.
	 * 
	 * @return the property binding, or null if the overridden value is not set
	 */
	public String getPropertyBinding( String propName )
	{
		if ( propName == null )
			return null;
		DesignElement element = getElement( );
		while ( element != null && element.getRoot( ) != null )
		{
			PropertyBinding propBinding = element.getRoot( )
					.findPropertyBinding( element, propName );
			if ( propBinding != null )
				return propBinding.getValue( );