class Pets(BaseModel):
    __root__: List[str]

class Controller(HTTPMethodView):
     @validate(json=Pets)
    async def post(self, req: request.Request, body: Pets):
        return json({})

  def _validate_instance(model, body, allow_coerce):
      data = clean_data(model, body) if allow_coerce else body
      return model(**data)

 def _validate_instance(model, body, allow_coerce):
     data = clean_data(model, body) if allow_coerce else body
     from sanic_ext.utils.typing import is_pydantic
     if is_pydantic(model) and isinstance(body,list):
          return model.parse_obj(body)
     return model(**data)

              if is_pydantic(value):
                try:
                    value = value.__pydantic_model__
                except AttributeError:
                    ...
                extra = value.schema()["properties"]

             if is_pydantic(value):
                try:
                    value = value.__pydantic_model__
                except AttributeError:
                    ...
                value_schema = value.schema()
                if "properties" in value_schema:
                    extra = value_schema["properties"]
                else:
                    extra = value_schema