in testslide/strict_mock.py [0:0]
def __get_caller_frame(self, depth: int) -> FrameType:
# Adding extra 3 to account for the stack:
# __get_caller_frame
# __get_caller
# __init__
depth += 3
current_frame = inspect.currentframe()
while current_frame:
depth -= 1
if not depth:
break
current_frame = current_frame.f_back
return current_frame # type: ignore