In Symfony 3.4 is deprecated to not implement reset() in data collectors

[javiereguiluz]

In Sf 3.4 is deprecated to not implement reset() in data collectors. In 4.0 is mandatory to do that.

In https://symfony.com/doc/4.0/profiler/data_collector.html we document reset() but in https://symfony.com/doc/3.4/profiler/data_collector.html we don't even mention it.

Should we:

• Mention in 3.4 that you must implement reset()?
• Update 3.4 fully as 4.0 to explain the reset() method?

[xabbuh]

For 4.0, this was done in #8882. Should we do some changes for 3.4?

[javiereguiluz]

Fixed by #8969.