original_string: public function hasEnabledUsername()
      {
          if ($this->usernameClass === false || !is_string($this->usernameClass) || !class_exists($this->usernameClass)) {
              return false;
          }
          return true;
      }
code: public function hasEnabledUsername()
      {
          if ($this->usernameClass === false || !is_string($this->usernameClass) || !class_exists($this->usernameClass)) {
              return false;
          }
          return true;
      }
code_tokens: public function hasEnabledUsername ( ) { if ( $ this -> usernameClass === false || ! is_string ( $ this -> usernameClass ) || ! class_exists ( $ this -> usernameClass ) ) { return false ; } return true ; }
docstring: Check whether this user enables the username feature or not.
  @return boolean
docstring_tokens: Check whether this user enables the username feature or not .