Http POST resource functions can define more than one payload parameters

[LakshanWeerasinghe]

Description

We should only allow defining only single payload parameter for a single http post resource method definition. But there are two ways that we can define more than one payload parameter for the resource method.

Steps to Reproduce

Case 1:

   resource function post foo(@http:Payload PayloadType payload, @http:Payload PayloadType payload2) {
        do {
        } on fail error err {
            // handle error
        }
    }

Case 2:

    resource function post foo(PayloadType payload, @http:Payload PayloadType payload2) {
        do {
        } on fail error err {
            // handle error
        }
    }

Version

update-11

Environment Details (with versions)

No response