@Override
                public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
                    kotlinJpsPluginVersionComboBox.removePopupMenuListener(this);
                    fetchAvailableJpsCompilersAsync(
                            availableVersions -> {
                                kotlinJpsPluginVersionComboBox.removeItem(loadingItem);
                                if (availableVersions == null) {
                                    kotlinJpsPluginVersionComboBox.addItem(
                                            JpsVersionItem.createLabel(
                                                    KotlinBaseCompilerConfigurationUiBundle.message("failed.fetching.all.available.versions.from.maven")
                                            )
                                    );
                                } else {
                                    SortedSet<IdeKotlinVersion> newItems = new TreeSet<>(availableVersions);
                                    for (JpsVersionItem item : jpsPluginComboBoxModel.getItems()) {
                                        IdeKotlinVersion ideKotlinVersion = item.getVersion();
                                        if (ideKotlinVersion != null) {
                                            newItems.add(ideKotlinVersion);
                                        }
                                    }

                                    Object selectedItem = jpsPluginComboBoxModel.getSelectedItem();
                                    jpsPluginComboBoxModel.update(
                                            ContainerUtil.reverse(ContainerUtil.map(newItems, it -> new JpsVersionItem(it))));
                                    kotlinJpsPluginVersionComboBox.setSelectedItem(selectedItem);
                                }

                                if (kotlinJpsPluginVersionComboBox.isPopupVisible()) {
                                    kotlinJpsPluginVersionComboBox.hidePopup();
                                    kotlinJpsPluginVersionComboBox.showPopup();
                                }
                            });
                }
@Override
                public void popupMenuWillBecomeVisible(PopupMenuEvent e)