presto-hive/src/main/java/io/prestosql/plugin/hive/HiveCoercionRecordCursor.java/HiveCoercionRecordCursor/getLong
class HiveCoercionRecordCursor:    @Override
    public long getLong(int field)
    {
        if (coercers[field] == null) {
            return delegate.getLong(field);
        }
        return coercers[field].getLong(delegate, field);
    }