@type t() :: %Milvex.Milvus.Proto.Milvus.OperateUserRoleRequest{
  __unknown_fields__: [Protobuf.unknown_field()],
  base: Milvex.Milvus.Proto.Common.MsgBase.t() | nil,
  role_name: String.t(),
  type: Milvex.Milvus.Proto.Milvus.OperateUserRoleType.t(),
  username: String.t()
}