Set key in a particular GNOME schema

    CLI Example:

    .. code-block:: bash

        salt '*' gnome.set user=<username> schema=org.gnome.desktop.screensaver key=idle-activation-enabled value=False

def set_(schema=None, key=None, user=None, value=None, **kwargs):
    '''
    Set key in a particular GNOME schema

    CLI Example:

    .. code-block:: bash

        salt '*' gnome.set user=<username> schema=org.gnome.desktop.screensaver key=idle-activation-enabled value=False

    '''
    _gsession = _GSettings(user=user, schema=schema, key=key)
    return _gsession._set(value)