src/vs/editor/contrib/parameterHints/browser/parameterHintsModel.ts/ParameterHintsModel/onModelContentChange
class ParameterHintsModel:	private onModelContentChange(): void {
		if (this.isTriggered) {
			this.trigger({ triggerKind: languages.SignatureHelpTriggerKind.ContentChange });
		}
	}