front end - Creating compiled search TRIE file for argument string completion

I'd like to generate a compiled search TRIE file (like those found in $InstallationDirectory\SystemFiles\FrontEnd\SystemResources\FunctionalFrequency\) to help implement the auto-completion feature on user-defined functions.

As described in File-name completion for custom functions, I could directly add a list of strings into the specialArgFunctions.tr file. However, my lists of arguments is long and likely to change during development, so I'd prefer to point to a TRIE file that I can update as needed.

How can I create a compiled TRIE file? Can this be done in Mathematica or Workbench? Is the TRIE file extension structure documented anywhere?

b3m2a1 comment:

These files are here in v11:
FileNames["*.trie", 
  PacletFind["AutoCompletionData"][[1]]["Location"],
  Infinity
 ]
Similarly in 11 is CA`CADumpTriePacket which seems to extract the properties from a trie file, but not the trie format itself.

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