Want to understand Virustotal for FortiSIEM

Hello Team,

I came across Virustotal for FortiSIEM. I was curious to know how does that work with FortiSIEM, Like what is the use case ? What is the workflow ? Where it is available

It was not present at External Systems Configuration Guide page but on my the demo instance which I have it was visible. However due to permission issue I was not able to dig in further. I want to know about that connector/integration. Any help would be appreciated. 

TIA!