Async processing in a Connector Business Rule

Hi All,

I am writing an Connector BR to connect to a system via their API.  I first build the rule as a Extender rule so that I can test the logic.  So far it works great.  It uses Asynchronous processing on all of the web calls.  When I try to move that code into a Connector BR, I am having an issue on the GetFieldList part of it.  When I try to use it in a data source, I get the following error:

Unable to cast object of type 'System.Threading.Tasks.Task`1[System.Object]' to type 'System.Collections.Generic.List`1[System.String]'.

I am guessing this is because the Main module in the BR is  public async Task<obect> Main so whatever is returned is going to be a Task<object>.

Has anyone done Asynchronous processing in the connector rule and had the GetFieldList part working. 

My only thought to get around this is the write the data to a table/file with the Extender BR then the Connector reads that.  

Any thoughts are greatly appreciated.

Scott