A Simple POJO that represents the slot information.
A slot can be visualised as one combination of browser flavor, version, platform and instance.
Lets say we have a node configuration json file that looks like
this.
Then the number of slots would be equal to
11.
- 5 slots for firefox (because the json defines maxInstances as 5 for firefox)
- 5 slots for chrome
- 1 slot for internet explorer