original_string: public function keyDataChanged($key)
      {
          $data           = $this->toArray($key);
          $originalData   = $this->returnOriginalData($key);
  
          return $data !== $originalData;
      }
code: public function keyDataChanged($key)
      {
          $data           = $this->toArray($key);
          $originalData   = $this->returnOriginalData($key);
  
          return $data !== $originalData;
      }
code_tokens: public function keyDataChanged ( $ key ) { $ data = $ this -> toArray ( $ key ) ; $ originalData = $ this -> returnOriginalData ( $ key ) ; return $ data !== $ originalData ; }
docstring: check that data for given key was changed
  
  @param string $key
  @return bool
docstring_tokens: check that data for given key was changed