completion

Request to request completion at a given text document position. The request's parameter is of type [[TextDocumentPosition]] the response is of type [[CompletionItem CompletionItem[]]] or [[CompletionList]] or a Thenable that resolves to such.

The request can delay the computation of the [[CompletionItem.detaildetail]] and [[CompletionItem.documentationdocumentation]] properties to the completionItem/resolve request. However, properties that are needed for the initial sorting and filtering, like sortText, filterText, insertText, and textEdit, must not be changed during resolve.