### Is there an existing issue for this?

- [X] I have searched the existing issues and read the documentation

### Question

Using a websocket apigatewayv2 in localstack and i need to change the body of the request e.g. add the connectionid, which is something i can do with a HTTP integration on the AWS gateway, however when I try this with localstack i receive the following error "Unsupported integration type "HTTP" for Websocket API ID" and then prints the ID of the API, if this feature is not enabled then how should we test the actual API where the connectionId and other things are added to the request body

### Anything else?

_No response_
if not self.process:
            return True
        if INFRA_STOPPED:
            return True
        
        
        
        import psutil
        return not psutil.pid_exists(self.process.pid)
    def stop(self, quiet=False):
        if self.stopped:
            return
        if not self.process:
            LOG.warning("No process found for command '%s'", self.cmd)
            return
        parent_pid = self.process.pid
        try:
            kill_process_tree(parent_pid)
            self.process = None
        except Exception as e:
            if not quiet:
                LOG.warning("Unable to kill process with pid %s: %s", parent_pid, e)
        try:
            self.stop_listener and self.stop_listener(self)
        except Exception as e: