src/main/java/com/cedarsoftware/util/io/JsonObject.java
public boolean isArray()
    {
        if (target == null)
        {
            if (type != null)
            {
                return type.contains("[");
            }
            return containsKey("@items") && !containsKey("@keys");
        }
        return target.getClass().isArray();
    }
public boolean isArray()
    {
        if (target == null)
        {
            if (type != null)
            {
                return type.contains("[");
            }
            return containsKey("@items") && !containsKey("@keys");
        }
        return target.getClass().isArray();
    }
Array APIs