public void insert(String permission) {
        if (permission == null) {
            throw new NullPointerException("permission");
        }

        try {
            doInsert(permission);
        } catch (Exception ex) {
            // ignore
        }
    }
Insert a permission into the registry.

@param permission the permission
common/src/main/java/me/lucko/luckperms/common/treeview/PermissionRegistry.java