bbp_get_topic_author_role( array $args = array() )

	function bbp_get_topic_author_role( $args = array() ) {

		// Parse arguments against default values
		$r = bbp_parse_args( $args, array(
			'topic_id' => 0,
			'class'    => 'bbp-author-role',
			'before'   => '',
			'after'    => ''
		), 'get_topic_author_role' );

		$topic_id    = bbp_get_topic_id( $r['topic_id'] );
		$role        = bbp_get_user_display_role( bbp_get_topic_author_id( $topic_id ) );
		$author_role = sprintf( '%1$s<div class="%2$s">%3$s</div>%4$s', $r['before'], $r['class'], $role, $r['after'] );

		return apply_filters( 'bbp_get_topic_author_role', $author_role, $r );
	}