presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/StorageFormat.java/StorageFormat/toString
class StorageFormat:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("serDe", serDe)
                .add("inputFormat", inputFormat)
                .add("outputFormat", outputFormat)
                .toString();
    }