@type t() :: %Milvex.Milvus.Proto.Common.OperationMetrics{
  __unknown_fields__: [Protobuf.unknown_field()],
  collection_metrics: %{
    optional(String.t()) => Milvex.Milvus.Proto.Common.Metrics.t() | nil
  },
  global: Milvex.Milvus.Proto.Common.Metrics.t() | nil,
  operation: String.t()
}