extend proxy definition

[sadym-chromium]

Alternative to #1922

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This change is 

[whimboo]

Personally I like this more than the other approach given that it extends the feature set and will not cause backward incompatibility issues.

@sadym-chromium I assume you want to get a first feedback first before adding the capability processing and deserialization steps, right?

[sadym-chromium]

Personally I like this more than the other approach given that it extends the feature set and will not cause backward incompatibility issues.

@sadym-chromium I assume you want to get a first feedback first before adding the capability processing and deserialization steps, right?

This approach uses the current syntax with "valid values", so technically the parsing algo is not required.

[sadym-chromium]

@whimboo WDYT?

[sadym-chromium]

@whimboo friendly ping

[sadym-chromium]

Deprecated in favor of #1937

[whimboo]

Deprecated in favor of #1937

@sadym-chromium I assume this PR should then be closed?

[sadym-chromium]

I don't have a strong preference one way or the other. So let's get one merged and close the other one afterward to prevent reopening PRs in case of this one is more preferable.

[sadym-chromium]

I don't have a strong preference one way or the other. So let's get one merged and close the other one afterward to prevent reopening PRs in case of this one is more preferable.

Actually nevermind. Closing this one