public boolean containsValue(Object value) {
        return indexOfValue(value) >= 0;
    }
Check whether a value exists in the array.  This requires a linear search
through the entire array.

@param value The value to search for.
@return Returns true if the value exists, else false.
android/android_framework/base/src/main/java/github/tornaco/android/thanos/core/util/collection/SimpleArrayMap.java