static Boolean isList(Object v) {
        return (v instanceof Map && ((Map<String, Object>) v).containsKey("@list"));
    }
static Boolean isList ( Object v ) { return ( v instanceof Map && ( ( Map < String , Object > ) v ) . containsKey ( "@list" ) ) ; }
Returns true if the given value is a JSON-LD List

@param v
the value to check.
@return