@Override
    public Any toProto(Any in) {
        return in;
    }
Convert a list of {@link WorkflowTask} instances into a ProtoBuf wrapper object.

@param list a list of {@link WorkflowTask} instances
@return a ProtoBuf message wrapping the contents of the list
grpc/src/main/java/com/netflix/conductor/grpc/ProtoMapper.java