gtk/text_view.go
func (v *TextView) SetBuffer(buffer *TextBuffer) {
	C.gtk_text_view_set_buffer(v.native(), buffer.native())
}
func (v *TextView) SetBuffer(buffer *TextBuffer) {
	C.gtk_text_view_set_buffer(v.native(), buffer.native())
}
// SetBuffer is a wrapper around gtk_text_view_set_buffer().