+ public static function getRole($roleName)
+ {
+ return static::where('name', '=', $roleName)->first();
+ }
+
+ /**
+ * Get the role object for the specified system role.
+ * @param $roleName
+ * @return Role
+ */
+ public static function getSystemRole($roleName)
+ {
+ return static::where('system_name', '=', $roleName)->first();
+ }
+
+ /**
+ * Get all visible roles
+ * @return mixed
+ */
+ public static function visible()