src/vs/editor/contrib/suggest/suggestController.ts/SuggestController/triggerSuggest
class SuggestController:	triggerSuggest(onlyFrom?: Set<CompletionItemProvider>): void {
		if (this.editor.hasModel()) {
			this.model.trigger({ auto: false, shy: false }, false, onlyFrom);
			this.editor.revealLine(this.editor.getPosition().lineNumber, ScrollType.Smooth);
			this.editor.focus();
		}
	}