Bug 142432 MasterPage from library can't be restored to modify
Details: MasterPage from library can't be restored to modify Step: 1.New a library named lib1, and insert a masterpage named lib-mp. 2.Publish the library into resource folder. 3.New a report design and use lib1. 4.Drop the lib-mp from library explorer into outline of report design. 5.Double click lib-mp, and switch to Property editro tab. 6.Click restore. Actual result: Pop up an error message and said that the master page cannot specify size the page type is not custom.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
{
		return getElement( ).isTemplateParameterValue( getModule( ) );
	}
	/**
	 * Gets the property data for either a system-defined or user-defined
	 * property.
	 * 
	 * @param propName
	 *            The name of the property to lookup.
	 * @return The property definition, or null, if the property is undefined.
	 */
	public IElementPropertyDefn getPropertyDefn( String propName )
	{
		
		return getElement( ).getPropertyDefn( propName );
	}
	/**
	 * Returns the effective module of the element. If the element is attached
	 * 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.