On Sat, 15 May 2021 20:53:28 GMT, Istvan Neuwirth 
<github.com+6502015+ineuwi...@openjdk.org> wrote:

>> 8266846: Add java.time.InstantSource
>
> src/java.base/share/classes/java/time/InstantSource.java line 93:
> 
>> 91:  * @since 17
>> 92:  */
>> 93: public interface InstantSource {
> 
> Should not we add `@FunctionalInterface`? I can easily imagine this interface 
> being used in tests where we can define the `InstantSource` with lambdas.

`@FunctionalInterface` isn't required for use by lambdas. I wasn't initially 
convinced using it here was the right choice.

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PR: https://git.openjdk.java.net/jdk/pull/4016

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