public VirtualGatewayHealthCheckPolicy withIntervalMillis(Long intervalMillis) {
        setIntervalMillis(intervalMillis);
        return this;
    }
<p>
The time period in milliseconds between each health check execution.
</p>

@param intervalMillis
       The time period in milliseconds between each health check execution.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-appmesh/src/main/java/com/amazonaws/services/appmesh/model/VirtualGatewayHealthCheckPolicy.java