PhpCsFixer\ConfigInterface::getFormat PHP Method

    public function getFormat();

 protected function resolveFormat()
 {
     if (array_key_exists('format', $this->options)) {
         $format = $this->options['format'];
     } elseif (method_exists($this->config, 'getFormat')) {
         $format = $this->config->getFormat();
     } else {
         $format = 'txt';
         // default
     }
     if (!in_array($format, $this->formats, true)) {
         throw new InvalidConfigurationException(sprintf('The format "%s" is not defined, supported are %s.', $format, implode(', ', $this->formats)));
     }
     $this->format = $format;
 }