docs: add a note about exclusion of symbols prefixed with ɵ from our public api surface (#15440)

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Igor Minar 2017-03-23 17:21:52 -07:00 committed by GitHub
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@ -32,7 +32,7 @@ We explicitly don't consider the following to be our public API surface:
- any file/import paths within our package except for the `/`, `/testing` and `/bundles/*`
- constructors of injectable classes (services and directives) - please use DI to obtain instances of these classes
- any class members or symbols marked as `private` or prefixed with underscore
- any class members or symbols marked as `private`, or prefixed with underscore (`_`) and [barred latin o](https://en.wikipedia.org/wiki/%C6%9F) (`ɵ`)
- extending any of our classes unless the support for this is specifically documented in the API docs
- the contents and API surface of the code generated by Angular's compiler (with one notable exception: the existence and name of `NgModuleFactory` instances exported from generated code is guaranteed)