original_string: private function validateUser(UserInterface $user)
      {
          return $user->isValid($this->username, $this->password, $this->realm);
      }
code: private function validateUser(UserInterface $user)
      {
          return $user->isValid($this->username, $this->password, $this->realm);
      }
code_tokens: private function validateUser ( UserInterface $ user ) { return $ user -> isValid ( $ this -> username , $ this -> password , $ this -> realm ) ; }
docstring: Checks for valid user
  
  @param  User $user
  @return bool
docstring_tokens: Checks for valid user