bbp_get_user_nicename( int $user_id, array $args = array() )

	function bbp_get_user_nicename( $user_id = 0, $args = array() ) {

		// Bail if no user ID passed
		$user_id = bbp_get_user_id( $user_id );
		if ( empty( $user_id ) )
			return false;

		// Parse default arguments
		$r = bbp_parse_args( $args, array(
			'user_id' => $user_id,
			'before'  => '',
			'after'   => '',
			'force'   => ''
		), 'get_user_nicename' );

		// Get the user data and nicename
		if ( empty( $r['force'] ) ) {
			$user     = get_userdata( $user_id );
			$nicename = $user->user_nicename;

		// Force the nicename to something else
		} else {
			$nicename = (string) $r['force'];
		}

		// Maybe wrap the nicename
		$retval = !empty( $nicename ) ? ( $r['before'] . $nicename . $r['after'] ) : '';

		// Filter and return
		return (string) apply_filters( 'bbp_get_user_nicename', $retval, $user_id, $r );
	}