code: @SafeVarargs
    public static void assertUnchanged(String message, DataSource... dataSources) throws DBAssertionError {
      multipleUnchangedAssertions(CallInfo.create(message), dataSources);
    }
docs: Assert that no changes occurred for the given data sources
  (error message variant).
  
  @param message Assertion error message.
  @param dataSources Data sources.
  @throws DBAssertionError if the assertion fails.
  @see #assertUnchanged(String,DataSource)
  @since 1.2