OData Client DataServiceContext using Connected Service

I am creating a middleware to get data from Epicor via BAQ into my program to do some comparison.

I have added Connected Service

This extension created some objects for like Dynamic Query and Query Item.

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Now, I am trying to use these classes, but struggle to find documentations on them. Anyone has any experiences on these classes?

I cannot even get the data unless I use user name and password and cannot use API Key. Any documentation would be helpful. Thanks :slight_smile: