code: func (v *TextView) ScrollToMark(mark *TextMark, within_margin float64, use_align bool, xalign, yalign float64) {
  	C.gtk_text_view_scroll_to_mark(v.native(), mark.native(), C.gdouble(within_margin), gbool(use_align), C.gdouble(xalign), C.gdouble(yalign))
  }
docs: // ScrollToMark is a wrapper around gtk_text_view_scroll_to_mark().