src/main/java/com/workplacesystems/utilsj/collections/decorators/SynchronizedMap.java
public void clear() {
        SyncUtils.synchronizeWrite(lock, new Callback<Object>() {
            @Override
            protected void doAction() {
                map.clear();
            }
        });
    }
public void clear() {
        SyncUtils.synchronizeWrite(lock, new Callback<Object>() {
            @Override
            protected void doAction() {
                map.clear();
            }
        });
    }
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