public boolean isEmpty() {
        switch(size()) {
            case 0:
                return true;
            case 1:
                Element element = (Element) get(0);
                if (element.type() == Element.CHUNK && ((Chunk) element).isEmpty()) {
                    return true;
                }
                return false;
                default:
                    return false;
        }
    }
public boolean isEmpty ( ) { switch ( size ( ) ) { case 0 : return true ; case 1 : Element element = ( Element ) get ( 0 ) ; if ( element . type ( ) == Element . CHUNK && ( ( Chunk ) element ) . isEmpty ( ) ) { return true ; } return false ; default : return false ; } }
Checks is this <CODE>Phrase</CODE> contains no or 1 empty <CODE>Chunk</CODE>.

@return	<CODE>false</CODE> if the <CODE>Phrase</CODE>
contains more than one or more non-empty<CODE>Chunk</CODE>s.