func IdentifyParams(a *metadata.Action, params APIParams) (payloadParams APIParams, queryParams APIParams) {
	payloadParamNames := a.PayloadParamNames()
	payloadParams = make(APIParams)
	for _, n := range payloadParamNames {
		if p, ok := params[n]; ok {
			payloadParams[n] = p
		}
	}
	queryParamNames := a.QueryParamNames()
	queryParams = make(APIParams)
	for _, n := range queryParamNames {
		if p, ok := params[n]; ok {
			queryParams[n] = p
		}
	}
	return payloadParams, queryParams
}
func IdentifyParams(a *metadata.Action, params APIParams) (payloadParams APIParams, queryParams APIParams) {
	payloadParamNames := a.PayloadParamNames()
	payloadParams = make(APIParams)
	for _, n := range payloadParamNames {
		if p, ok := params[n]; ok {
			payloadParams[n] = p
		}
	}
	queryParamNames := a.QueryParamNames()
	queryParams = make(APIParams)
	for _, n := range queryParamNames {
		if p, ok := params[n]; ok {
			queryParams[n] = p
		}
	}
	return payloadParams, queryParams
}
// IdentifyParams organizes the given params in two groups: the payload params and the query params.