def pop_focus(self, cli):
        if len(self.focus_stack) > 1:
            self.focus_stack.pop()
        else:
            raise IndexError('Cannot pop last item from the focus stack.')
Pop buffer from the focus stack.
dataset/ETHPy150Open jonathanslenders/python-prompt-toolkit/prompt_toolkit/buffer_mapping.py/BufferMapping.pop_focus