class S(Schema): name = fields.Child(fields.String(name='title'), path='b.c', load='a')
class S(Schema): rec_id = fields.Child(fields.UUID(name='id'), path='b.c', load='rec')
class S(Schema): name = fields.Child(fields.String(name='title'), load='nest') name2 = fields.Child(fields.String(name='title2'), load='nest')