from the gui

const odb::dbTransform xform = inst->getTransform();
    for (auto inst_iterm : inst->getITerms()) {
      bool drawn = false;
      for (auto* mpin : inst_iterm->getMTerm()->getMPins()) {
        for (auto* geom : mpin->getGeometry()) {
          const auto layer = geom->getTechLayer();
          if (layer == nullptr) {
            continue;
          }
          if (viewer_->options_->isVisible(layer)) {
            Rect pin_rect = geom->getBox();
            xform.apply(pin_rect);
            const QString name = inst_iterm->getMTerm()->getConstName();
            drawn = drawTextInBBox(
                text_color, text_font, pin_rect, name, painter, false);
          }
          if (drawn) {
            // Only draw on the first box
            break;
          }
        }
        if (drawn) {
          break;
        }
      }
    }

I don't think there is a helper but I'd be glad to have one