state._fsp--;
if (state.failed) return result;
if ( state.backtracking==0 ) {
if( buildDescr ) {
ConstraintConnectiveDescr descr = ConstraintConnectiveDescr.newAnd();
descr.addOrMerge( result );
descr.addOrMerge( right );
if ( args != null ) { descr.addAnnotation( args ); }
result = descr;
}