[Question] how to know what char was typed when onDidChangeModelContent executed

[KamiC6238]

Context

• This issue is not a bug report. (please use a different template for reporting a bug)
• This issue is not a duplicate of an existing issue. (please use the search to find existing issues)

Description

i need to know what char typed when onDidChangeModelContent executed, and send different lsp request like 'changed' or 'completion'.

now i dont know how to do it. the event of onDidChangeModelContent is not help for me.