@Override
    public final int getReadLimit() {
        return requestClientOptions.getReadLimit();
    }
Add a custom query parameter for the request. Since multiple values are allowed for the same
query parameter, this method does NOT overwrite any existing parameter values in the request.
<p>
Any custom query parameters that are defined are used in the HTTP request to the AWS service.

@param name
           The name of the query parameter
@param value
           The value of the query parameter. Only the parameter name will be added in the URI
           if the value is set to null. For example, putCustomQueryParameter("param", null)
           will be serialized to "?param", while putCustomQueryParameter("param", "") will be
           serialized to "?param=".
aws-java-sdk-core/src/main/java/com/amazonaws/AmazonWebServiceRequest.java