'Sets shape based parameters of this layer given an input tuple or int
or input layer
Arguments:
in_obj (int, tuple, Layer or Tensor or dataset): object that provides shape
information for layer
Returns:
(tuple): shape of output data'

def configure(self, in_obj):

    super(Broadcast, self).configure(in_obj)
    for l in self.layers:
        l.configure(in_obj)
    self._configure_merge()
    return self
