test.dev/fixtures/python_capi/SerializedStruct
test.dev/fixtures/python_capi/SerializedUnion
test.dev/fixtures/python_capi/SerializedError
test.dev/fixtures/python_capi/MarshalStruct
test.dev/fixtures/python_capi/MarshalUnion
test.dev/fixtures/python_capi/MarshalError
