implementing ObjectTemplate HasInstance() method

[Mike Moening]

After digging into object construction using FunctionTemplate or ObjectTemplate in this post:

https://groups.google.com/forum/?fromgroups=#!topic/v8-users/521aXb3Uer4

I believe the ObjectTemplate is missing a HasInstance() method for use in testing arguments to JS functions to be of a certain type.

While it is possible to use FunctionTemplate for this purpose (since HasInstance() exists), the FunctionTemplate 

method of construction is convoluted and messy since it requires two FunctionTemplates or a hack to prevent constructor recursion.

My proposal is to create HasInstance() on the ObjectTemplate class.

I'm looking for guidance on the best way to accomplish this.

Questions:

1) How can I get the ObjectTemplate that was used to create an instance of an Object?

2) How can I get the constructor for both the ObjectTemplate and the Object and compare them?

My assumption is that I should be comparing the constructors for equality.

The internals of v8 use a class called ObjectTemplateInfo which is somewhat confusing to me at this point.

Thanks for the help!