'Set the acc_on flag according to bool argument for each layer.
If a layer in the container does not support accumulate_updates
it will be skipped.
Arguments:
acc_on (bool): Value to set the acc_on flag of supported layers to.'

def set_acc_on(self, acc_on):

    if (not hasattr(self, 'accumulate_updates')):
        raise BufferError('accumulate_updates    not    set')
    for l in self.layers:
        if hasattr(l, 'accumulate_updates'):
            l.set_acc_on(acc_on)
