code: @SafeVarargs
    public static void assertEmpty(String message, DataSource... dataSources) throws DBAssertionError {
      multipleEmptyStateAssertions(CallInfo.create(message), dataSources);
    }
docs: Assert that the given data sources have no rows (error message variant).
  
  @param message Assertion error message.
  @param dataSources Data sources.
  @throws DBAssertionError if the assertion fails.
  @see #assertEmpty(String,DataSource)
  @see #assertState(String,DataSet...)
  @see #empty(DataSource)
  @since 1.2