docs-bug(COMPONENT): The documented example for creating a flat tree used deprecated controls

[btiller123]

Documentation Feedback

According to the release notes for 18.2.0 in https://github.com/angular/components/releases, many tree controls have been deprecated which my IDE shows the same as well. However, the angular material documented code examples for creating trees is still using these deprecated controls. I need to replace my deprecated controls for creating/using a flat node tree so would like examples showing how to do it without the deprecated controls. See https://material.angular.io/components/tree/examples .
Please update the documentation.

Affected documentation page

https://material.angular.io/components/tree/examples

[faraz-ahmad-uft]

I am facing the same issue.

Please let me know If someone has alternative approach for these deprecated classes.

[amysorto]

This should be fixed by #29752. The next release will update the docs site and the examples.