Create variable of type Map[string]interface{} in gRPC protoc buffer golang : <p>I'm using grpc golang to communicate between client and server application.
Below is the code for protoc buffer.</p>

<pre><code>syntax = "proto3";
package Trail;

service TrailFunc {
  rpc HelloWorld (Request) returns (Reply) {}
}

// The request message containing the user's name.
message Request {
  map&lt;string,string&gt; inputVar = 1;
}
// The response message containing the greetings
message Reply {
  string outputVar = 1;
}
</code></pre>

<p>I need to create a field inputVar of type map[string]interface{} inside message data structure instead of map[string]string.
How can I achieve it?
Thanks in advance.</p>
