docs: def get(self, pk, **kwargs):
          """Get item from Model
          ---
          get:
            parameters:
            - in: path
              schema:
                type: integer
              name: pk
            - $ref: '#/components/parameters/get_item_schema'
            responses:
              200:
                description: Item from Model
                content:
                  application/json:
                    schema:
                      type: object
                      properties:
                        label_columns:
                          type: object
                        show_columns:
                          type: array
                          items:
                            type: string
                        description_columns:
                          type: object
                        show_title:
                          type: string
                        id:
                          type: string
                        result:
                          $ref: '#/components/schemas/{{self.__class__.__name__}}.get'
              400:
                $ref: '#/components/responses/400'
              401:
                $ref: '#/components/responses/401'
              404:
                $ref: '#/components/responses/404'
              422:
                $ref: '#/components/responses/422'
              500:
                $ref: '#/components/responses/500'
          """
          item = self.datamodel.get(pk, self._base_filters)
          if not item:
              return self.response_404()
  
          _response = dict()
          _args = kwargs.get("rison", {})
          select_cols = _args.get(API_SELECT_COLUMNS_RIS_KEY, [])
          _pruned_select_cols = [col for col in select_cols if col in self.show_columns]
          self.set_response_key_mappings(
              _response,
              self.get,
              _args,
              **{API_SELECT_COLUMNS_RIS_KEY: _pruned_select_cols}
          )
          if _pruned_select_cols:
              _show_model_schema = self.model2schemaconverter.convert(_pruned_select_cols)
          else:
              _show_model_schema = self.show_model_schema
  
          _response["id"] = pk
          _response[API_RESULT_RES_KEY] = _show_model_schema.dump(item, many=False).data
          self.pre_get(_response)
          return self.response(200, **_response)