*/
@Override
AstNode parse( final DdlTokenStream tokens,
final AstNode parentNode ) throws ParsingException {
boolean procedure = true;
DdlStatement stmt = null;
SchemaElementType schemaElementType = null;
if (tokens.canConsume(DdlStatement.CREATE_VIRTUAL_FUNCTION.tokens())) {
stmt = DdlStatement.CREATE_VIRTUAL_FUNCTION;
schemaElementType = SchemaElementType.VIRTUAL;