Actually I'm looking into a way in which I can achieve all these following cases.
1 - I can provide only custom suggestions. If no suggestion is present. Then nothing(blank) should be shown as suggestion.
2 - I can provide only Monaco default suggestion(words existing in the editor).
3 - I can provide custom suggestion + Monaco default suggestion(words existing in the editor).

What's the current existing behavior?
1 - I can achieve first case by returning a suggestion or a blank suggestion.
2 - I can achieve second case by not returning any suggestion(not even the blank suggestion object).

Is there's a way to achieve third case?