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

@param intervalMillis
       The time period in milliseconds between each health check execution.
aws-java-sdk-appmesh/src/main/java/com/amazonaws/services/appmesh/model/VirtualGatewayHealthCheckPolicy.java