How to modify the Emscripten building commands and flags for WebGL build

Hi
Is there a way for user to see the full commands calling “BuildTools/Emscripten/emcc” and modify the commands and flags as we need ?

For example, I want to use “–embed-file” instead of “–preload-file”.

Apparently answered in: Can Unity export the Emscripten symbols map on WebGL builds? - Questions & Answers - Unity Discussions

PlayerSettings.SetPropertyString(“emscriptenArgs”, “–emit-symbol-map”);