How to open file in MonoDevelop by script?

Questions & Answers
1

Hello,
I am making a custom script template. I want this template to be in menu Assets/Create/CustomTemplate.
I created corresponding menu item, and I want to open my previously saved text file (Editor\Data\Resources\ScriptTemplates\CustomTemplate.cs) in default script editor.
My question is - is there any way that i can get default script editor via script and give it a path of a file to open?

I am aware that this can be done via System.Diagnostics.Process.Start(), but this will open hardcoded application, not the default script editor.
I’ve searched alot, and the only things I’ve found is

UnityEditorInternal.InternalEditorUtility.OpenFileAtLineExternal();

and

AssetDatabase.OpenAsset();

I think the first one pretty close, but I don’t know how I get correct name of the script

2

I’ve found out myself,
It’s possible to use

UnityEditorInternal.InternalEditorUtility.OpenFileAtLineExternal(@"C:\1.txt", 1);

It wasn’t obvious for me that OpenFileAtLineExternal() takes a path, as “filename”