extensions/typescript-language-features/src/languageFeatures/diagnostics.ts/DiagnosticsManager/setEnableSuggestions
class DiagnosticsManager:	public setEnableSuggestions(language: DiagnosticLanguage, value: boolean) {
		const didUpdate = this._settings.setEnableSuggestions(language, value);
		if (didUpdate) {
			this.rebuildAll();
		}
	}