How can a macro tell if it's running in Base?

I tried supportsService() but it always returns false for Base Services.

Is there an equivalent test for Base to these 4 other support tests?

oDoc = ThisComponent  

msgbox oDoc.supportsService("com.sun.star.sheet.SpreadsheetDocument"			)
msgbox oDoc.supportsService("com.sun.star.drawing.DrawingDocument"			    )
msgbox oDoc.supportsService("com.sun.star.presentation.PresentationDocument"	)
msgbox oDoc.supportsService("com.sun.star.text.TextDocument"					)

In other words when you’re in Calc, and only Calc, ThisComponent.supportsService("com.sun.star.sheet.SpreadsheetDocument") returns True.

I’m looking for the same sort of test for base.

com.sun.star.sdb.OfficeDatabaseDocument

Thanks! Thought I had looked everywhere, but missed that one. For others, he means that I was wrong and that supportsService really does work for Base, like this: oDoc.supportsService("com.sun.star.sdb.OfficeDatabaseDocument") returns True.