comefrom: <awangdev>1021. Remove Outermost Parentheses_1.java
code: private boolean isPair(char a, char b) {
  
          return a == '(' && b ==')';
      }
masked: private boolean var_0 ( char var_1 , char var_2 ) {
    return var_1 == '(' && var_2 == ')' ;
  }
  