throw new ExtendsException( element, "", ExtendsException.DESIGN_EXCEPTION_UNNAMED_PARENT );
throw new InvalidParentException( element, "", InvalidParentException.DESIGN_EXCEPTION_UNNAMED_PARENT );
	public void setExtendsElement( DesignElement parent )			throws ExtendsException	{		if ( parent == null )		{			setExtendsName( null );			return;		}		String name = parent.getName( );		if ( StringUtil.isBlank( name ) )			throw new ExtendsException( element, "", //$NON-NLS-1$					ExtendsException.DESIGN_EXCEPTION_UNNAMED_PARENT );		Module module = parent.getRoot( );		if ( module instanceof Library )		{			String namespace = ( (Library) module ).getNamespace( );			name = StringUtil.buildQualifiedReference( namespace, name );		}		setExtendsName( name );	}