serializeDefinition example

if (isset($filtered_service_definition['public']) && $filtered_service_definition['public'] === FALSE) {
          $services_provided[] = [
            ['foo_service' => $definition->reveal()],
            [],
          ];
          continue;
        }

        $services_provided[] = [
          ['foo_service' => $definition->reveal()],
          ['foo_service' => static::serializeDefinition($filtered_service_definition)],
        ];
      }

      return $services_provided;
    }

    /** * Helper function to serialize a definition. * * Used to override serialization. */