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[] or CompletionList or a Thenable that resolves to such.

The request can delay the computation of the detail and documentation 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.