getParent
Gets the parent section for the given section
.
The parent section is the section that contains this section
. A special case are sections of type GTK_CSS_SECTION_DOCUMEN
T. Their parent will either be NULL
if they are the original CSS document that was loaded by method@Gtk.CssProvider.load_from_file or a section of type GTK_CSS_SECTION_IMPORT
if it was loaded with an @import
rule from a different file.
Return
the parent section