code: public final void ruleOpAnd() throws RecognitionException {
  
          		int stackSize = keepStackSize();
          	
          try {
              // InternalXbase.g:246:2: ( ( '&&' ) )
              // InternalXbase.g:247:2: ( '&&' )
              {
              // InternalXbase.g:247:2: ( '&&' )
              // InternalXbase.g:248:3: '&&'
              {
              if ( state.backtracking==0 ) {
                 before(grammarAccess.getOpAndAccess().getAmpersandAmpersandKeyword()); 
              }
              match(input,15,FOLLOW_2); if (state.failed) return ;
              if ( state.backtracking==0 ) {
                 after(grammarAccess.getOpAndAccess().getAmpersandAmpersandKeyword()); 
              }
  
              }
  
  
              }
  
          }
          catch (RecognitionException re) {
              reportError(re);
              recover(input,re);
          }
          finally {
  
              	restoreStackSize(stackSize);
  
          }
          return ;
      }
docs: InternalXbase.g:242:1: ruleOpAnd : ( '&&' ) ;