code: public function getConfigurationDefinition()
      {
          if (!$this instanceof ConfigurationDefinitionFixerInterface) {
              throw new \LogicException('Cannot get configuration definition using Abstract parent, child not implementing "PhpCsFixer\Fixer\ConfigurationDefinitionFixerInterface".');
          }
  
          if (null === $this->configurationDefinition) {
              $this->configurationDefinition = $this->createConfigurationDefinition();
          }
  
          return $this->configurationDefinition;
      }
docs: {@inheritdoc}