protected function prepare_collection_query_args( $request ) {

		// Prepare all set args.
		$registered = $this->get_collection_params();
		$prepared   = array();

		foreach ( $registered as $key => $value ) {
			if ( isset( $request[ $key ] ) ) {
				$prepared[ $key ] = $request[ $key ];
			}
		}

		$prepared = $this->prepare_collection_query_search_args( $prepared, $request );
		if ( is_wp_error( $prepared ) ) {
			return $prepared;
		}

		$prepared = $this->map_params_to_query_args( $prepared, $registered, $request );

		return $prepared;
	}