acl/src/main/java/org/springframework/security/acls/domain/EhCacheBasedAclCache.java
public void evictFromCache(Serializable pk) {
		Assert.notNull(pk, "Primary key (identifier) required");

		MutableAcl acl = getFromCache(pk);

		if (acl != null) {
			cache.remove(acl.getId());
			cache.remove(acl.getObjectIdentity());
		}
	}
public void evictFromCache(Serializable pk) {
		Assert.notNull(pk, "Primary key (identifier) required");

		MutableAcl acl = getFromCache(pk);

		if (acl != null) {
			cache.remove(acl.getId());
			cache.remove(acl.getObjectIdentity());
		}
	}
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