code: private static Properties readPropertiesFromDescriptor(ArquillianDescriptor descriptor) {
          for (ExtensionDef extension : descriptor.getExtensions()) {
              if (CitrusExtensionConstants.CITRUS_EXTENSION_QUALIFIER.equals(extension.getExtensionName())) {
                  Properties properties = new Properties();
                  properties.putAll(extension.getExtensionProperties());
                  return properties;
              }
          }
  
          return new Properties();
      }
docs: Find Citrus extension configuration in descriptor and read properties.
  @param descriptor
  @return