private void takeKeyFeaturesFromBlockStatement(@NotNull PsiBlockStatement statement) {
    if (shouldCollectFeatures(statement)) {
      super.visitBlockStatement(statement);
    }
    else {
      myUsageSimilarityFeaturesRecorder.addAllFeatures(statement, "COMPLEX_BLOCK");
    }
  }
private void takeKeyFeaturesFromBlockStatement(@NotNull PsiBlockStatement statement)