@type t() :: %Milvex.Milvus.Proto.Milvus.AlterCollectionSchemaRequest{
  __unknown_fields__: [Protobuf.unknown_field()],
  action:
    Milvex.Milvus.Proto.Milvus.AlterCollectionSchemaRequest.Action.t() | nil,
  base: Milvex.Milvus.Proto.Common.MsgBase.t() | nil,
  collectionID: integer(),
  collection_name: String.t(),
  db_name: String.t()
}