WriterPoolMember [] writers = new WriterPoolMember[MAX_ACTIVE];
final String CONTENT = "Any old content";
ByteArrayOutputStream baos = new ByteArrayOutputStream();
baos.write(CONTENT.getBytes());
for (int i = 0; i < MAX_ACTIVE; i++) {
writers[i] = pool.borrowFile();
assertEquals("Number active", i + 1, pool.getNumActive());
((ARCWriter)writers[i]).write("http://one.two.three", "no-type",
"0.0.0.0", 1234567890, CONTENT.length(), baos);
}