gtk/text_view.go
func (v *TextView) SetJustification(justify Justification) {
	C.gtk_text_view_set_justification(v.native(), C.GtkJustification(justify))
}
func (v *TextView) SetJustification(justify Justification) {
	C.gtk_text_view_set_justification(v.native(), C.GtkJustification(justify))
}
// SetJustification is a wrapper around gtk_text_view_set_justification().