src/vs/editor/contrib/parameterHints/browser/parameterHintsWidget.ts/ParameterHintsWidget/hasDocs
class ParameterHintsWidget:	private hasDocs(signature: languages.SignatureInformation, activeParameter: languages.ParameterInformation | undefined): boolean {
		if (activeParameter && typeof activeParameter.documentation === 'string' && assertIsDefined(activeParameter.documentation).length > 0) {
			return true;
		}
		if (activeParameter && typeof activeParameter.documentation === 'object' && assertIsDefined(activeParameter.documentation).value.length > 0) {
			return true;
		}
		if (signature.documentation && typeof signature.documentation === 'string' && assertIsDefined(signature.documentation).length > 0) {
			return true;
		}
		if (signature.documentation && typeof signature.documentation === 'object' && assertIsDefined(signature.documentation.value).length > 0) {
			return true;
		}
		return false;
	}