for instance:
po [NSBundle mainBundle]
0x0000600002130000
p [NSBundle mainBundle]
(NSBundle *) 0x0000600002130000
p [[NSBundle mainBundle] bundlePath]
error: Execution was interrupted, reason: EXC_BAD_ACCESS (code=1, address=0x0).
The process has been returned to the state before expression evaluation.
I am in debug mode