[HELP] How to based on Query param to route?

A third party POST request to us is like: https://xxx.com?cmdType=ABC

Is possible to depend on 'cmdType' to register different routing?
For example:

app.Party("/entry", func(ctx iris.Context){
cmd := ctx.Params().GetString("cmdType")
if cmd == "ABC" {
// call ABC handler
}else if cmd == "EFG" {
// call EFG handler
}
})

Start with the routing and request-parameter documentation around app.Party and the ctx.Params().GetString call shown in the issue. Verify whether query-based dispatch is supported and identify the appropriate approach for routing ABC and EFG requests; done means the behavior is clearly confirmed or documented.

Written by the indexing model from the issue text.