org.checkerframework.checker.units.qual

Annotation Type kg

@Documented
 @Retention(value=RUNTIME)
 @Target(value={TYPE_USE,TYPE_PARAMETER})
 @SubtypeOf(value=Mass.class)
 @UnitsMultiple(quantity=g.class,
               prefix=kilo)
public @interface kg

Kilogram.

See the Checker Framework Manual:

Units Checker