Type is Map<String, *>? but Any was expected

Hello, I got a problem when using the wire protobuf and grpc client.
I use latest version of wire. And got compile error Type mismatch: inferred type is Map<String, *>? but Any was expected
The grpc service is as follows:
rpc CreateOrder(RequestClass) returns (.google.protobuf.Struct);
Code generated:

  public override fun CreateOrder(): GrpcCall<RequestClass,  Map<String, *>?> =
      client.newCall(GrpcMethod(
      path = "/retail_core.v1.Retail/CreateOrder",
      requestAdapter = PaypalCreateOrderRequest.ADAPTER,
      responseAdapter = ProtoAdapter.STRUCT_MAP
  ))

ProtoAdapter.STRUCT_MAP return only Map<String, *>? witch is not subtype of Any
class GrpcMethod<S : Any, R : Any>

Can you add possibility to change adapter to custom or add @JvmSuppressWildCards or do STRUCT_MAP with Any return?

Start with the generated CreateOrder method and ProtoAdapter.STRUCT_MAP shown in the report, then trace GrpcMethod's S and R bounds to reproduce the Kotlin type mismatch. Done means the Struct response adapter is accepted by the generated gRPC client without the reported Map<String, *>? versus Any error, with a regression test if the relevant test location is found.