{{alias}}( policy )
    Returns the enumeration constant associated with an output ndarray data type
    policy string.

    Downstream consumers of this function should *not* rely on specific integer
    values (e.g., `SAME == 0`). Instead, the function should be used in an
    opaque manner.

    Parameters
    ----------
    policy: string
        Policy string.

    Returns
    -------
    out: integer|null
        Enumeration constant.

    Examples
    --------
    > var out = {{alias}}( 'same' )
    <number>

    See Also
    --------