deserializeValue

assert(deserialize!(int[string])(serializeToJson(null)) is null);
assert(deserialize!(int[string])(serializeToAsdf(null)) is null);
assert(deserialize!(int[string])(serializeToJson(["a" : 1, "b" : 2])) == ["a" : 1, "b" : 2]);
assert(deserialize!(int[string])(serializeToAsdf(["a" : 1, "b" : 2])) == ["a" : 1, "b" : 2]);