question: get an iterator over the reads in this context . will return an empty iterator if this context has no backing source of reads and/or no interval . concode_field_sep SimpleInterval interval concode_elem_sep ReadsDataSource dataSource concode_field_sep SimpleInterval getInterval concode_elem_sep boolean hasBackingDataSource
target: Iterator < GATKRead > function ( ) { if ( dataSource == null || interval == null ) { return Collections . < GATKRead > emptyList ( ) . iterator ( ) ; } return dataSource . query ( interval ) ; }