[Issue 17856] __traits( identifier ) could use examples in on line documentation.

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=17856

--- Comment #1 from Kyle Heaser <kheaser at gmail.com> ---
For completeness, examples could also be provided for isFloating, isIntegral,
etc.  But identifier is probably the least understandable.

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