Gio.Mount.prototype.guess_content_type_sync
function guess_content_type_sync(force_rescan: Boolean, cancellable: Gio.Cancellable): Array(String) {
// Gjs wrapper for g_mount_guess_content_type_sync()
}
Tries to guess the type of content stored on mount. Returns one or more textual identifiers of well-known content types (typically prefixed with "x-content/"), e.g. x-content/image-dcf for camera memory cards. See the [shared-mime-info](http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec) specification for more on x-content types.
This is an synchronous operation and as such may block doing IO; see Gio.Mount.prototype.guess_content_type for the asynchronous version.
Since 2.18
- force_rescan
Whether to force a rescan of the content. Otherwise a cached result will be used if available
- cancellable
optional Gio.Cancellable object, null to ignore
- Returns
a null-terminated array of content types or null on error. Caller should free this array with GLib.strfreev when done with it.