original_string: public function getKey()
      {
          if (!isset($this->key)) {
              $this->key = md5(microtime().rand());
          }
          return $this->key;
      }
code: public function getKey()
      {
          if (!isset($this->key)) {
              $this->key = md5(microtime().rand());
          }
          return $this->key;
      }
code_tokens: public function getKey ( ) { if ( ! isset ( $ this -> key ) ) { $ this -> key = md5 ( microtime ( ) . rand ( ) ) ; } return $ this -> key ; }
docstring: Get the a unique key for this object. It should return the same value regardless of when this function is called!
  
  @return string
docstring_tokens: Get the a unique key for this object . It should return the same value regardless of when this function is called!