How to use the specutils.analysis.utils.computation_wrapper function in specutils

regions: `~specutils.utils.SpectralRegion` or list of `~specutils.utils.SpectralRegion`
        Region within the spectrum to calculate the FWHM value. If regions is
        `None`, computation is performed over entire spectrum.

    Returns
    -------
    gaussian_fwhm : `~astropy.units.Quantity` or list (based on region input)
        Approximate full width of the signal at half max

    Notes
    -----
    The spectrum should be continuum subtracted before being passed to this
    function.
    """
    return computation_wrapper(_compute_gaussian_fwhm, spectrum, regions)

regions: `~specutils.utils.SpectralRegion` or list of `~specutils.utils.SpectralRegion`
        Region within the spectrum to calculate the FWZI value. If regions is
        `None`, computation is performed over entire spectrum.

    Returns
    -------
    `~astropy.units.Quantity` or list (based on region input)
        Full width of the signal at zero intensity.

    Notes
    -----
    The spectrum must be continuum subtracted before being passed to this
    function.
    """
    return computation_wrapper(_compute_fwzi, spectrum, regions)

regions: `~specutils.utils.SpectralRegion` or list of `~specutils.utils.SpectralRegion`
        Region within the spectrum to calculate the FWHM value. If regions is
        `None`, computation is performed over entire spectrum.

    Returns
    -------
    whm : `~astropy.units.Quantity` or list (based on region input)
        Full width of the signal at half max

    Notes
    -----
    The spectrum should be continuum subtracted before being passed to this
    function.
    """
    return computation_wrapper(_compute_fwhm, spectrum, regions)

regions : `~specutils.SpectralRegion` or list of `~specutils.SpectralRegion`
        Region within the spectrum to calculate the gaussian sigma width. If
        regions is `None`, computation is performed over entire spectrum.

    Returns
    -------
    flux : `~astropy.units.Quantity`
        Flux in the provided spectrum (or regions). Unit isthe ``spectrum``'s'
        ``flux`` unit times ``spectral_axis`` unit.

    Notes
    -----
    While the flux can be computed on any spectrum or region, it should be
    continuum-subtracted to compute actual line fluxes.
    """
    return computation_wrapper(_compute_line_flux, spectrum, regions)

regions: `~specutils.utils.SpectralRegion` or list of `~specutils.utils.SpectralRegion`
        Region within the spectrum to calculate the gaussian sigma width. If
        regions is `None`, computation is performed over entire spectrum.

    Returns
    -------
    approx_sigma: `~astropy.units.Quantity` or list (based on region input)
        Approximated sigma value of the spectrum

    Notes
    -----
    The spectrum should be continuum subtracted before being passed to this
    function.
    """
    return computation_wrapper(_compute_gaussian_sigma_width, spectrum, regions)

Returns
    -------
    ew : `~astropy.units.Quantity`
        Equivalent width calculation, in the same units as the ``spectrum``'s
        ``spectral_axis``.

    Notes
    -----
    To do a standard equivalent width measurement, the ``spectrum`` should be
    continuum-normalized to whatever ``continuum`` is before this function is
    called.

    """

    kwargs = dict(continuum=continuum)
    return computation_wrapper(_compute_equivalent_width, spectrum, regions, **kwargs)