how to handle the lsp.CompletionTriggerKind.TriggerForIncompleteCompletions?

[6Seeks]

sorry, i donot know how to resolve the lsp.CompletionTriggerKind.TriggerForIncompleteCompletions (the completion response type).

could you suggest where i can find how it implented in the nvim-cmp, and when i should TriggerForIncompleteCompletions(=3) instead of Invoked(=1) or TriggerCharacter(=2).

Thanks!!!!!!!