'Set the acc_on flag according to bool argument. If set to true, the
layer will accumulate some (preset) parameters on calls to functions
that are decorated with the accumulates decorator. In order to use this
feature, accumulate_updates=True must have been passed to the layer\'s
allocate function
This currently only works for a few hard coded parameters in select layers
Arguments:
acc_on (bool): Value to set the acc_on flag to.'

def set_acc_on(self, acc_on):

    if (not hasattr(self, 'accumulate_updates')):
        raise BufferError('accumulate_updates    not    set')
    if self.accumulate_updates:
        self.acc_on = acc_on
