code: protected function parseCommandArguments()
      {
          if (is_null($this->argument('body')) && ! $this->option('file')) {
              throw new \InvalidArgumentException('You must explicitly specify the body of the job.');
          }
  
          if (! is_null($this->argument('body')) && $this->option('file')) {
              throw new \InvalidArgumentException('Body argument and file option are mutually exclusive.');
          }
  
          if (false === ($this->delay = filter_var($this->option('delay'), FILTER_VALIDATE_INT, ['options' => ['min_range' => 0]]))) {
              throw new \InvalidArgumentException('Delay should be a positive integer or 0.');
          }
  
          if (false === ($this->ttr = filter_var($this->option('ttr'), FILTER_VALIDATE_INT, ['options' => ['min_range' => 1]]))) {
              throw new \InvalidArgumentException('TTR should be a positive integer.');
          }
  
          if (false === ($this->priority = filter_var($this->option('priority'), FILTER_VALIDATE_INT, ['options' => ['min_range' => 0]]))) {
              throw new \InvalidArgumentException('Priority should be a positive integer or 0.');
          }
  
          if ($file = $this->option('file')) {
              $this->validateFile($file);
              $this->validateBodySize(filesize($file));
  
              if (false === $this->body = file_get_contents($file)) {
                  throw new \RuntimeException("Error while trying to read '$file' file.");
              }
          }
  
          if (! is_null($this->argument('body'))) {
              $this->validateBodySize(strlen($this->argument('body')));
              $this->body = $this->argument('body');
          }
      }
docs: {@inheritdoc}