@Override
    public @Nullable Object getData(@NotNull String dataId) {
      if (CommonDataKeys.PROJECT.is(dataId)) {
        return myProject;
      }
      else if (USAGE_VIEW_KEY.is(dataId)) {
        return UsageViewImpl.this;
      }
      else if (PlatformCoreDataKeys.HELP_ID.is(dataId)) {
        return HELP_ID;
      }
      else if (PlatformDataKeys.COPY_PROVIDER.is(dataId)) {
        return myCopyProvider;
      }
      else if (ExclusionHandler.EXCLUSION_HANDLER.is(dataId)) {
        return myExclusionHandler;
      }
      else if (PlatformDataKeys.EXPORTER_TO_TEXT_FILE.is(dataId)) {
        return myTextFileExporter;
      }
      else if (CommonDataKeys.NAVIGATABLE_ARRAY.is(dataId)) {
        return ContainerUtil.mapNotNull(selectedNodes(), n-> ObjectUtils.tryCast(TreeUtil.getUserObject(n), Navigatable.class))
          .toArray(Navigatable.EMPTY_NAVIGATABLE_ARRAY);
      }
      else if (USAGE_TARGETS_KEY.is(dataId)) {
        var targets = ContainerUtil.mapNotNull(
          selectedNodes(),
          o -> o instanceof UsageTargetNode ? ((UsageTargetNode)o).getTarget() : null
        );
        return targets.isEmpty() ? null : targets.toArray(UsageTarget.EMPTY_ARRAY);
      }
      else {
        DataProvider selectedProvider = ObjectUtils.tryCast(TreeUtil.getUserObject(getSelectedNode()), DataProvider.class);
        if (PlatformCoreDataKeys.BGT_DATA_PROVIDER.is(dataId)) {
          List<TreeNode> selectedNodes = allSelectedNodes();
          DataProvider selectedBgtProvider = selectedProvider == null ? null : PlatformCoreDataKeys.BGT_DATA_PROVIDER.getData(selectedProvider);
          return CompositeDataProvider.compose(slowId -> getSlowData(slowId, selectedNodes), selectedBgtProvider);
        }
        Object nodeData = selectedProvider != null ? selectedProvider.getData(dataId) : null;
        if (nodeData != null) {
          return DataValidators.validOrNull(nodeData, dataId, selectedProvider);
        }
      }
      return null;
    }
@Override
    public @Nullable Object getData(@NotNull String dataId)