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'

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)