base/common/src/main/com/thesett/common/util/maps/CircularArrayMap.java
public boolean containsKey(Object objectKey)
    {
        int key = (Integer) objectKey;

        return keyInRange(key) && (data[offset(key)] != null);
    }
public boolean containsKey(Object objectKey)
    {
        int key = (Integer) objectKey;

        return keyInRange(key) && (data[offset(key)] != null);
    }
{@inheritDoc}

@throws ClassCastException If the key is not an Integer.