@SuppressWarnings("unchecked")
private void performInteractions(final Map[] interactions, BlockFetchingListener listener)
throws IOException {
TransportConf conf = new TransportConf(new SystemPropertyConfigProvider());
BlockFetchStarter fetchStarter = mock(BlockFetchStarter.class);
Stubber stub = null;
// Contains all blockIds that are referenced across all interactions.
final LinkedHashSet<String> blockIds = Sets.newLinkedHashSet();