RFR: 8306698: Add overloads to MethodTypeDesc::of [v2]

[Mandy Chung]

On Sun, 23 Apr 2023 23:44:41 GMT, Chen Liang <liach at openjdk.org> wrote:

>> Please review this patch adding two new convenience methods that allows easier access to MethodTypeDesc instances and its associated CSR as well. This is a necessity to allow #13186 to reduce array copies in a few scenarios; the implementation of the two methods will be updated there.
>> 
>> Javadoc: https://cr.openjdk.org/~liach/8306698/1/java.base/java/lang/constant/MethodTypeDesc.html
>
> Chen Liang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update method type and specification, update tests

yes, I'm back from vacation.

This change looks fine.  Can you update the copyright header to 2023?

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PR Comment: https://git.openjdk.org/jdk/pull/13599#issuecomment-1560051087