pub fn grant_namespace_permission_impl<T: Config>(
grantor: OriginFor<T>,
grantee: T::AccountId,
paths: BoundedBTreeSet<NamespacePathInner, T::MaxNamespacesPerPermission>,
duration: PermissionDuration<T>,
revocation: RevocationTerms<T>,
) -> Result<PermissionId, DispatchError>