TextIter.getToggledTags

Returns a list of #GtkTextTag that are toggled on or off at this point. (If toggled_on is true, the list contains tags that are toggled on.) If a tag is toggled on at iter, then some non-empty range of characters following iter has that tag applied to it. If a tag is toggled off, then some non-empty range following iter does not have the tag applied to it.