@Override public WorkflowTaskPb.WorkflowTask toProto(final WorkflowTask from) {
        final WorkflowTaskPb.WorkflowTask.Builder to = WorkflowTaskPb.WorkflowTask.newBuilder(super.toProto(from));
        if (from.getRetryCount() == null) {
            to.setRetryCount(NO_RETRY_VALUE);
        }
        return to.build();
    }
Convert a WorkflowTaskList message wrapper into a {@link List} instance
with its contents.

@param list an instance of a ProtoBuf message
@return a list with the contents of the message
grpc/src/main/java/com/netflix/conductor/grpc/ProtoMapper.java