Access source information

[parnoldx]

Hi, thank you for maintaining this lib.

A COM lib that I use with JACOB has a parent() method to navigate the class tree. I then need to check if the parent is of the type that is wanted. So some information like the source of the exception would be useful https://github.com/freemansoft/jacob-project/blob/f20f5c46f992ad7e19a5864dc320fcdac913a998/jni/Dispatch.cpp#L386-L387

Is this available in some other way? If not, can this maybe be added?