@Nullable
    static String getSwitchLabelText(@Nullable PsiSwitchLabelStatementBase switchLabel) {
      if (switchLabel != null) {
        if (switchLabel.isDefaultCase()) {
          return PsiKeyword.DEFAULT;
        }
        PsiCaseLabelElementList labelElementList = switchLabel.getCaseLabelElementList();
        if (labelElementList != null) {
          PsiCaseLabelElement[] expressions = labelElementList.getElements();
          if (expressions.length != 0) {
            return PsiKeyword.CASE + ' ' + expressions[0].getText();
          }
        }
      }
      return null;
    }
@Nullable
    static String getSwitchLabelText(@Nullable PsiSwitchLabelStatementBase switchLabel)