original_string: public function stripParentheses($expression)
      {
          if (Str::startsWith($expression, '(') && Str::endsWith($expression, ')')) {
              $expression = substr($expression, 1, -1);
          }
  
          return $expression;
      }
code: public function stripParentheses($expression)
      {
          if (Str::startsWith($expression, '(') && Str::endsWith($expression, ')')) {
              $expression = substr($expression, 1, -1);
          }
  
          return $expression;
      }
code_tokens: public function stripParentheses ( $ expression ) { if ( Str :: startsWith ( $ expression , '(' ) && Str :: endsWith ( $ expression , ')' ) ) { $ expression = substr ( $ expression , 1 , - 1 ) ; } return $ expression ; }
docstring: Strip the parentheses from the given expression.
  
  @param  string  $expression
  @return string
docstring_tokens: Strip the parentheses from the given expression .