code: def custom_prefix_lax(instance):
      
      for error in chain(custom_object_prefix_lax(instance),
                         custom_property_prefix_lax(instance),
                         custom_observable_object_prefix_lax(instance),
                         custom_object_extension_prefix_lax(instance),
                         custom_observable_properties_prefix_lax(instance)):
          yield error
docs: Ensure custom content follows lenient naming style conventions
      for forward-compatibility.