/**
* Get an iterator over the reference bases in this context. Will return an empty iterator if this
* context has no backing data source and/or interval.
*
* <p>Call {@link #setWindow} before calling this method if you want to configure the amount of
* extra reference context to include around the current interval
*
* @return iterator over the reference bases in this context
*/
@Override
public Iterator<Byte> iterator() {
return dataSource != null && window != null
? dataSource.query(window)
: new ByteArrayIterator(new byte[0]);
}
