Bug 123406 Add geLocaltStringProperty in GroupElementHandle and GroupPropertyHandle
Please refer to 123405. GUI need a way to get the local setting of given property because current getStringPropery method will return inherited value if there are no local value.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/SimpleGroupElementHandle.java
return isInvalidInMasterPage( propName );
	}
	/**
	 * Returns if the property is invalid in Masterpage.
	 * 
	 * @return true if the property is invalid in Masterpage, false otherwise.
	 */
	private boolean isInvalidInMasterPage( String propName )
	{
		for ( int i = 0; i < elements.size( ); i++ )
		{
			DesignElementHandle container = ( (DesignElementHandle) elements
					.get( i ) ).getContainer( );
			while ( container != null )
			{
				if ( container instanceof MasterPageHandle )
					if ( ReportItemHandle.BOOKMARK_PROP.equals( propName )
							|| ReportItemHandle.TOC_PROP.equals( propName )
							|| StyleHandle.PAGE_BREAK_AFTER_PROP
									.equals( propName )
							|| StyleHandle.PAGE_BREAK_BEFORE_PROP
									.equals( propName ) )
						return true;
				container = container.getContainer( );
			}
		}
		return false;
	}