presto-main/src/main/java/io/prestosql/operator/scalar/ArrayContains.java/ArrayContains/checkNotIndeterminate
class ArrayContains:    private static void checkNotIndeterminate(Boolean equalsResult)
    {
        if (equalsResult == null) {
            throw new PrestoException(NOT_SUPPORTED, "contains does not support arrays with elements that are null or contain null");
        }
    }