'Returns the current time according to the `IOLoop`\'s clock.
The return value is a floating-point number relative to an
unspecified time in the past.
By default, the `IOLoop`\'s time function is `time.time`.  However,
it may be configured to use e.g. `time.monotonic` instead.
Calls to `add_timeout` that pass a number instead of a
`datetime.timedelta` should use this function to compute the
appropriate time, so they can work no matter what time function
is chosen.'

def time(self):

    return time.time()
