original_string: public function contains($element)
      {
          $hashIndex = $this->hashIndex($element);
  
          if (array_key_exists($hashIndex, $this->_items)) {
              return true;
          }
          return false;
      }
code: public function contains($element)
      {
          $hashIndex = $this->hashIndex($element);
  
          if (array_key_exists($hashIndex, $this->_items)) {
              return true;
          }
          return false;
      }
code_tokens: public function contains ( $ element ) { $ hashIndex = $ this -> hashIndex ( $ element ) ; if ( array_key_exists ( $ hashIndex , $ this -> _items ) ) { return true ; } return false ; }
docstring: collection contains a given element
  
  @param    mixed      $element        element
  @return   bool                       true if the hashset contains a specified element
docstring_tokens: collection contains a given element