Gio.FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE
A key in the "standard" namespace for getting the content type of the file. Corresponding Gio.FileAttributeType is Gio.FileAttributeType.string. The value for this key should contain a valid content type.
A key in the "standard" namespace for getting the content type of the file. Corresponding Gio.FileAttributeType is Gio.FileAttributeType.string. The value for this key should contain a valid content type.