public boolean canContain( int slotId, DesignElementHandle content )
public boolean canContain( int slotId, String type )
	public boolean canContain( int slotId, DesignElementHandle content )	{		if ( content == null )			return false;		boolean flag = getElement( ).canContain( getModule( ), slotId,				content.getElement( ) );		if ( !flag )			return false;		return !getModule( ).isReadOnly( );	}