question: private void updateStoragePoolRequiredCapacityMap ( Map < URI , Long > storagePoolRequiredCapacity , URI storagePoolUri , long requiredCapacity ) { if ( storagePoolRequiredCapacity . get ( storagePoolUri ) == null ) { storagePoolRequiredCapacity . put ( storagePoolUri , requiredCapacity ) ; } else { long updatedRequiredCapacity = storagePoolRequiredCapacity . get ( storagePoolUri ) + requiredCapacity ; storagePoolRequiredCapacity . put ( storagePoolUri , updatedRequiredCapacity ) ; } }
target:  Convenience method to add entries to a Map used track required capacity per storage pool.