lib/plugins/aws/provider/awsProvider.js/AwsProvider/getApiGatewayDescription
class AwsProvider:  getApiGatewayDescription() {
    if (
      this.serverless.service.provider.apiGateway &&
      this.serverless.service.provider.apiGateway.description
    ) {
      return this.serverless.service.provider.apiGateway.description;
    }
    return undefined;
  }