presto-thrift-api/src/main/java/io/prestosql/plugin/thrift/api/PrestoThriftTupleDomain.java/PrestoThriftTupleDomain/toString
class PrestoThriftTupleDomain:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("columnsWithConstraints", domains != null ? domains.keySet() : ImmutableSet.of())
                .toString();
    }