public function get_ids() {
		if ( $this->void_query ) {
			return array();
		}


		try {
			/** @var WP_Query $query */
			$query = $this->get_query();

			// The request property will be set during the `get_posts` method and empty before it.
			if ( empty( $query->request ) ) {
				$query->set( 'fields', 'ids' );

				return $query->get_posts();
			}

			return array_map(
				static function ( $post ) {
					if ( is_int( $post ) ) {
						return $post;
					}
					$post_arr = (array) $post;

					return Arr::get( $post_arr, 'ID', Arr::get( $post_arr, 'id', 0 ) );
				},
				$query->posts
			);

		} catch ( Tribe__Repository__Void_Query_Exception $e ) {
			/*
			 * Extending classes might use this method to run sub-queries
			 * and signal a void query; let's return an empty array.
			 */
			return array();
		}
	}