parameters: (self, cli)
docstring: Pop buffer from the focus stack.
docstring_summary: Pop buffer from the focus stack.
docstring_tokens: Pop buffer from the focus stack .
function: def pop_focus(self, cli):
          """
          Pop buffer from the focus stack.
          """
          if len(self.focus_stack) > 1:
              self.focus_stack.pop()
          else:
              raise IndexError('Cannot pop last item from the focus stack.')
function_tokens: 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.' )