awaitility/src/main/java/org/awaitility/core/ConditionFactory.java
public void untilFalse(final AtomicBoolean atomic) {
        untilAtomic(atomic, anyOf(is(Boolean.FALSE), is(false)));
    }
public void untilFalse(final AtomicBoolean atomic) {
        untilAtomic(atomic, anyOf(is(Boolean.FALSE), is(false)));
    }
Await until a Atomic boolean becomes false.

@param atomic the atomic variable
@throws org.awaitility.core.ConditionTimeoutException If condition was not fulfilled within the given time period.