### Question:
Memory { public static long mb(final double megabytes) { return (long) megabytes * 1024 * 1024; } private  Memory(); static long gb(final double gigabytes); static long mb(final double megabytes); static long kb(final double kilobytes); static long toKb(final long bytes); static int toMb(final long bytes);  }### Answer:
@Test public void testMb() { assertEquals( Memory.mb( Long.SIZE ), (long) 64 * 1024 * 1024 ); }