presto-accumulo/src/main/java/io/prestosql/plugin/accumulo/io/AccumuloRecordCursor.java/AccumuloRecordCursor/getBoolean
class AccumuloRecordCursor:    @Override
    public boolean getBoolean(int field)
    {
        checkFieldType(field, BOOLEAN);
        return serializer.getBoolean(fieldToColumnName[field]);
    }