ByteBuffer buffer = ByteBuffer.allocateDirect(4096);
    RdmaMemoryRegion region = provider.registerMemory(buffer, 
        EnumSet.of(RdmaAccess.LOCAL_READ, RdmaAccess.REMOTE_READ));
    
    assertNotNull(region);
    assertEquals(4096, region.getSize());
    assertTrue(region.hasAccess(RdmaAccess.LOCAL_READ));
    
    region.close();
}

@Test
public void testRdmaBufferManager() throws Exception {