Issue Description

Type: bug report

Describe what happened (or what feature you want)

When my program update the rule whith :
`GatewayR

Currently this will work:

"method": [
        {
            "name": "send-invalid-request",
            "type": "action",
            "provider": {
                "type": "process",
                "path": "echo",
                "arguments": "${request_file}"
            }
        }
    ]

But this won't:

"method": [
        {
            "name": "send-invalid-

Implement Message.InspectMsg and suitable overrides. This function should be invoked when a message is sent, but only when a debug flag is enabled in a lab load. Its purpose is to verify that the message

• belongs to a valid protocol
• matches its PSM's protocol (if sent by a PSM)
• has a valid signal for its protocol
• contains all parameters that are mandatory for its signal
• contains

Although it's not a high priority, we could get a more fancy and modern wheel.