Hello, 
I'm trying to implement a custom version of the lightning-tree-grid that contains a custom data type (to display custom conditional HTML)

Since I coudn't find any solutions online, I tried following the example on Creating Custom Data Types for lightning-datatable (https://developer.salesforce.com/docs/component-library/bundle/lightning-datatable/documentation#creating-custom-data-types), and replacing lightning/datatable by lightning/treeGrid
Unfortunately that didn't work.

Any help is appreciated.

Thank you