'Set the high- and low-water limits for write flow control.
These two values control when to call the protocol\'s
pause_writing() and resume_writing() methods.  If specified,
the low-water limit must be less than or equal to the
high-water limit.  Neither value can be negative.
The defaults are implementation-specific.  If only the
high-water limit is given, the low-water limit defaults to an
implementation-specific value less than or equal to the
high-water limit.  Setting high to zero forces low to zero as
well, and causes pause_writing() to be called whenever the
buffer becomes non-empty.  Setting low to zero causes
resume_writing() to be called only once the buffer is empty.
Use of zero for either limit is generally sub-optimal as it
reduces opportunities for doing I/O and computation
concurrently.'

def set_write_buffer_limits(self, high=None, low=None):

    self._ssl_protocol._transport.set_write_buffer_limits(high, low)
