def make_move(moving_area, new_label, labels):
    """
    Modify the `labels` argument in place (no return value!) such that the
    area `moving_area` has the new region label `new_label`.

    Parameters
    ----------
    moving_area :
        The area to be moved (assigned to a new region).
    new_label : `int`
        The new region label of area `moving_area`.
    labels : :class:`numpy.ndarray`
        Each element is a region label of the area corresponding array index.

    Examples
    --------
    >>> import numpy as np
    >>> labels = np.array([0, 0, 0, 0, 1, 1])
    >>> make_move(3, 1, labels)
    >>> (labels == np.array([0, 0, 0, 1, 1, 1])).all()
    True
    """
    labels[moving_area] = new_label
