human
Here's a good function header given the following:
I wrote the below code

    def do_clear():
        _lock.acquire()
        del _tracker[type][package]
        _lock.release()
    if future:
        sublime.set_timeout(do_clear, 5000)
    else:
        do_clear()

What's a good function header?
assistant
#Here's a good function header.

def clear(type, package, future=False):