How to use the cloudform.StringParameter function in cloudform

ResourceFactory.prototype.makeParams = function () {
        return _a = {},
            _a[ResourceFactory.ParameterIds.IAMRoleName] = new cloudform_1.StringParameter({
                Description: 'The name of the IAM role assumed by AppSync.',
                Default: 'AppSyncElasticSearchAccess'
            }),
            _a[ResourceFactory.ParameterIds.StreamingIAMRoleName] = new cloudform_1.StringParameter({
                Description: 'The name of the streaming lambda function.',
                Default: 'DynamoDBToElasticSearch'
            }),
            _a[ResourceFactory.ParameterIds.DebugStreamingLambda] = new cloudform_1.NumberParameter({
                Description: 'Enable debug logs for the Dynamo -> ES streaming lambda.',
                Default: 1,
                AllowedValues: [0, 1]
            }),
            _a[ResourceFactory.ParameterIds.ElasticSearchInstanceCount] = new cloudform_1.NumberParameter({
                Description: 'The number of instances to launch into the ElasticSearch domain.',
                Default: 1
            }),

ResourceFactory.prototype.makeParams = function () {
        var _a;
        return _a = {},
            _a[graphql_transformer_common_1.ResourceConstants.PARAMETERS.AppSyncApiName] = new cloudform_1.StringParameter({
                Description: 'The name of the AppSync API',
                Default: 'AppSyncSimpleTransform'
            }),
            _a[graphql_transformer_common_1.ResourceConstants.PARAMETERS.DynamoDBModelTableReadIOPS] = new cloudform_1.NumberParameter({
                Description: 'The number of read IOPS the table should support.',
                Default: 5
            }),
            _a[graphql_transformer_common_1.ResourceConstants.PARAMETERS.DynamoDBModelTableWriteIOPS] = new cloudform_1.NumberParameter({
                Description: 'The number of write IOPS the table should support.',
                Default: 5
            }),
            _a;
    };
    /**

'i3.8xlarge.elasticsearch', 'i3.16xlarge.elasticsearch'
                ]
            }),
            _a[amplify_graphql_transformer_common_1.ResourceConstants.PARAMETERS.ElasticSearchEBSVolumeGB] = new cloudform_1.NumberParameter({
                Description: 'The size in GB of the EBS volumes that contain our data.',
                Default: 20
            }),
            _a[amplify_graphql_transformer_common_1.ResourceConstants.PARAMETERS.ElasticSearchStreamingLambdaCodeS3Bucket] = new cloudform_1.StringParameter({
                Description: 'S3 bucket containing the DynamoDB streaming lambda code.',
                Default: 'sr-lambda-blueprints'
            }),
            _a[amplify_graphql_transformer_common_1.ResourceConstants.PARAMETERS.ElasticSearchStreamingLambdaCodeS3Key] = new cloudform_1.StringParameter({
                Description: 'S3 key containing the DynamoDB streaming lambda code.',
                Default: 'streaming-lambda.zip'
            }),
            _a[amplify_graphql_transformer_common_1.ResourceConstants.PARAMETERS.ElasticSearchStreamingLambdaCodeS3Version] = new cloudform_1.StringParameter({
                Description: 'S3 key containing the DynamoDB lambda code version.',
                Default: 'n9NaP2A0v3G3BzPXDkrs3rbrkLq2O4qJ'
            }),
            _a;
    };
    /**