@type t() :: %Milvex.Milvus.Proto.Milvus.DeleteRequest{
  __unknown_fields__: [Protobuf.unknown_field()],
  base: Milvex.Milvus.Proto.Common.MsgBase.t() | nil,
  collection_name: String.t(),
  consistency_level: Milvex.Milvus.Proto.Common.ConsistencyLevel.t(),
  db_name: String.t(),
  expr: String.t(),
  expr_template_values: %{
    optional(String.t()) => Milvex.Milvus.Proto.Schema.TemplateValue.t() | nil
  },
  hash_keys: [non_neg_integer()],
  partition_name: String.t()
}