text into buffer at iter, applying the list of tags to
the newly-inserted text. The last tag specified must be NULL to
terminate the list. Equivalent to calling gtkTextBufferInsert,
then gtkTextBufferApplyTag on the inserted text;
gtkTextBufferInsertWithTags is just a convenience function.gtkTextBufferInsertWithTags(object, iter, text, ...)objectiterbuffertext...