code: def meta(cls):
          
          if getattr(cls, '__from_class__', None) is not None:
              cls = cls.__from_class__
          attribute_info = {}
          for name, value in cls.__table__.columns.items():
              attribute_info[name] = str(value.type).lower()
  
          return {cls.__name__: attribute_info}
docs: Return a dictionary containing meta-information about the given
          resource.