def METHOD_NAME(self, batch_shape, _instance=None):
    new = self._get_checked_instance(Dirichlet, _instance)
    batch_shape = torch.Size(batch_shape)
    new.concentration = self.concentration.METHOD_NAME(batch_shape + self.event_shape)
    super(Dirichlet, new).__init__(
        batch_shape, self.event_shape, validate_args=False
    )
    new._validate_args = self._validate_args
    return new