bbp_get_displayed_user_field( string $field = '', string $filter = 'display' )

	function bbp_get_displayed_user_field( $field = '', $filter = 'display' ) {

		// Get the displayed user
		$user         = bbpress()->displayed_user;

		// Juggle the user filter property because we don't want to muck up how
		// other code might interact with this object.
		$old_filter   = $user->filter;
		$user->filter = $filter;

		// Get the field value from the WP_User object. We don't need to perform
		// an isset() because the WP_User::__get() does it for us.
		$value        = $user->$field;

		// Put back the user filter property that was previously juggled above.
		$user->filter = $old_filter;

		// Return empty
		return apply_filters( 'bbp_get_displayed_user_field', $value, $field, $filter );
	}