documentation for adding metadata schema or modifying the view is not helpful

[smrgeoinfo]

I'm trying to figure out how metadata view are generated, and the documentation is not useful.
https://docs.geonetwork-opensource.org/4.2/tutorials/customui/view/formatter/#exercices does not explain what the various groovy functions are doing.

For example I'm trying to hide the 'fileDecompressionTechnique' field in the editor and metadata view; I've commented out every place I can find fileDecompressionTechnique or 'File decompression technique' in the core-Geonetwork repo (I'm building 4.4 snapshot from source), flushed browser caches, restarted Geonetwork, and it still keeps showing up in the UI.

How can I configure the metadata entry form and presentation pages?

[fxprunayre]

Groovy formatter support has been removed in #7346 (the doc need an update on this).

For the metadata entry form check https://docs.geonetwork-opensource.org/4.2/customizing-application/editor-ui/tutorial/ and https://docs.geonetwork-opensource.org/4.2/customizing-application/editor-ui/creating-custom-editor/

For new XSLT formatter you can look at
https://github.com/geonetwork/core-geonetwork/tree/main/schemas/iso19115-3.2018/src/main/plugin/iso19115-3.2018/formatter