message: Change `TfLiteSubgraphExecute`'s first operand name to be `subgraph_key`.
diff: @@ -38,7 +38,7 @@ constexpr int kTfLiteSubgraphResource = 0;
  }
  REGISTER_OP("TfLiteSubgraphExecute")
  - .Input("x: string")
  + .Input("subgraph_key: string")
  .Input("args: Tin")
  .Output("output: Tout")
  .Attr("Tin: list(type) >= 0")
  