handle_featured_media example

$schema = $this->get_item_schema();

        if ( ! empty( $schema['properties']['sticky'] ) ) {
            if ( ! empty( $request['sticky'] ) ) {
                stick_post( $post_id );
            } else {
                unstick_post( $post_id );
            }
        }

        if ( ! empty( $schema['properties']['featured_media'] ) && isset( $request['featured_media'] ) ) {
            $this->handle_featured_media( $request['featured_media'], $post_id );
        }

        if ( ! empty( $schema['properties']['format'] ) && ! empty( $request['format'] ) ) {
            set_post_format( $post, $request['format'] );
        }

        if ( ! empty( $schema['properties']['template'] ) && isset( $request['template'] ) ) {
            $this->handle_template( $request['template'], $post_id, true );
        }

        $terms_update = $this->handle_terms( $post_id, $request );