The methods

• getMockBuilder()
• createMock()
• createConfiguredMock()
• createPartialMock()

currently support the creation of test doubles that implement multiple interfaces that are passed as an array of interface names for their first argument.

This functionality should be deprecated as "having to use it" is almost always a symptom of bad design. More importantly, though, the support for the creation of test doubles that implement multiple interfaces resulted in code that is hard to maintain.