WebDevStudios / CMB2

			$this->field = $this->rest_box->field_can_read( $field['id'], true );

			// And make sure current user can view this box.

			if ( $this->field && $this->get_item_permissions_check_filter() ) {

				$fields[ $field['id'] ] = $this->server->response_to_data(

					$this->prepare_field_response(),

					isset( $this->request['_embed'] )

				);

			}

		}

		return $this->prepare_item( $fields );

		// Loop and prepare boxes data.

		foreach ( $boxes as $this->rest_box ) {

			if (

				// Make sure this box can be read

				$this->rest_box->rest_read

				// And make sure current user can view this box.

				&& $this->get_item_permissions_check_filter( $this->request )

			) {

				$boxes_data[] = $this->server->response_to_data(

					$this->get_rest_box(),

					isset( $this->request['_embed'] )

				);

			}

		}

		return $this->prepare_item( $boxes_data );