presto-cli/src/main/java/io/prestosql/cli/AbstractWarningsPrinter.java/AbstractWarningsPrinter/printWithTrailingSeparator
class AbstractWarningsPrinter:    private void printWithTrailingSeparator(List<String> warnings)
    {
        // Print warnings and separate from subsequent output
        if (!warnings.isEmpty()) {
            print(warnings);
            printSeparator();
        }
    }