Navigator window not displaying function input parameters. Custom Connector for Power BI

So I found a solution from the PowerBI REST API connector project. Basically you need a special implementation of the Table.ToNavigationTable function. It seems that you need to delete the "Preview.DelayColumn = itemNameColumn" from Table.ToNavigationTable .

This implementation of the navigation table works:

Table.ForceToNavigationTable = (
    table as table,
    keyColumns as list,
    nameColumn as text,
    dataColumn as text,
    itemKindColumn as text,
    itemNameColumn as text,
    isLeafColumn as text
) as table =>
    let
        tableType = Value.Type(table),
        newTableType = Type.AddTableKey(tableType, keyColumns, true) meta 
        [
            NavigationTable.NameColumn = nameColumn, 
            NavigationTable.DataColumn = dataColumn,
            NavigationTable.ItemKindColumn = itemKindColumn, 
            NavigationTable.IsLeafColumn = isLeafColumn
        ],
        navigationTable = Value.ReplaceType(table, newTableType)
    in
        navigationTable;

The only problem I have now is that the documentation is not shown in the Navigator window:

In the Power Query Editor it looks like this: