def METHOD_NAME(target, prop, factor):
    r"""
    Scales an existing value by a factor.
    Useful for constricting some throat property.
    Parameters
    ----------
    target : Base
        The object which this model is associated with. This controls the
        length of the calculated array, and also provides access to other
        necessary properties.
    prop : str
        The dictionary key of the array containing the values to be scaled.
    factor : str
        The factor by which the values should be scaled.
    Returns
    -------
    value : ndarray
        Array containing ``target[prop]`` values scaled by ``factor``.
    """
    value = target[prop]*factor
    return value