@Override
  public void fillCompletionVariants(@NotNull final CompletionParameters parameters, @NotNull final CompletionResultSet result) {
    if (parameters.getInvocationCount() == 0) {
      return;
    }

    final PsiFile file = parameters.getOriginalFile();
    final Document document = PsiDocumentManager.getInstance(file.getProject()).getDocument(file);
    if (document != null) {
      JComboBox comboBox = document.getUserData(StringComboboxEditor.COMBO_BOX_KEY);
      if (comboBox != null) {
        String substring = document.getText().substring(0, parameters.getOffset());
        boolean plainPrefixMatcher = Boolean.TRUE.equals(document.getUserData(StringComboboxEditor.USE_PLAIN_PREFIX_MATCHER));
        final CompletionResultSet resultSet = plainPrefixMatcher ?
                                              result.withPrefixMatcher(new PlainPrefixMatcher(substring)) :
                                              result.withPrefixMatcher(substring);
        final LookupElementProvider lookupElementProvider = LOOKUP_ELEMENT_PROVIDER_KEY.get(document, LookupElementProvider.DEFAULT);
        final int count = comboBox.getItemCount();
        for (int i = 0; i < count; i++) {
          final Object o = comboBox.getItemAt(i);
          if (o instanceof String) {
            resultSet.addElement(PrioritizedLookupElement.withPriority(lookupElementProvider.createLookupElement((String)o), count - i));
          }
        }
        if (!Boolean.TRUE.equals(document.getUserData(CONTINUE_RUN_COMPLETION))) {
          result.stopHere();
        }
      }
    }
  }
@Override
  public void fillCompletionVariants(@NotNull final CompletionParameters parameters, @NotNull final CompletionResultSet result)