question: public static Element [ ] toElementArray ( Document doc , Object o ) throws PageException { if ( o instanceof Node [ ] ) { Node [ ] nodes = ( Node [ ] ) o ; if ( _isAllOfSameType ( nodes , Node . ELEMENT_NODE ) ) return ( Element [ ] ) nodes ; Element [ ] elements = new Element [ nodes . length ] ; for ( int i = 0 ; i < nodes . length ; i ++ ) { elements [ i ] = toElement ( doc , nodes [ i ] ) ; } return elements ; } else if ( o instanceof Collection ) { Collection coll = ( Collection ) o ; Iterator < Object > it = coll . valueIterator ( ) ; List < Element > elements = new ArrayList < Element > ( ) ; while ( it . hasNext ( ) ) { elements . add ( toElement ( doc , it . next ( ) ) ) ; } return elements . toArray ( new Element [ elements . size ( ) ] ) ; } Node [ ] nodes = _toNodeArray ( doc , o ) ; if ( nodes != null ) return toElementArray ( doc , nodes ) ; try { return new Element [ ] { toElement ( doc , o ) } ; } catch ( ExpressionException e ) { throw new XMLException ( "can't cast Object of type " + Caster . toClassName ( o ) + " to a XML Element Array" ) ; } }
target:  casts a value to a XML Element Array