OData server side support

Thanks for taking the time to reply but that link isn't really the question I was asking. We're perfectly capable of supporting the odata standard at the server end but I was more asking about what operations Power BI can transparently at least try to offload to said server rather than sucking up entire huge datasets and performing them at the client end.  I'm able to observe it trying to do filter and order operations in the URL it generates to the data source but not so much anything else like aggregation and I wanted to find out definitively what is supported now and what may be supported in the near future.