a pango.font_description.FontDescription to fill in with the current values. The family name in this structure will be set using pango.font_description.FontDescription.setFamilyStatic using values from an attribute in the pango.attr_list.AttrList associated with the iterator, so if you plan to keep it around, you must call: pango_font_description_set_family (desc, pango_font_description_get_family (desc)).
location to store language tag for item, or null if none is found.
location in which to store a list of non-font attributes at the the current position; only the highest priority value of each attribute will be added to this list. In order to free this value, you must call pango.attribute.Attribute.destroy on each member.
Get the font and other attributes at the current iterator position.