prometheus 
  Exposes some of Membrane's internal metrics in the Prometheus format.
 See also examples/monitoring-tracing/prometheus for a demo, including a screenshot.
 
 Can be used in: 
 serviceProxy, api, proxy, global, chainDef, for, stompProxy, if, registration, wsStompReassembler, internal, interceptor, chain, bean, transport and soapProxy 
Attributes
| Name | Required | Default | Description | Examples | 
|---|
    | buckets | false | - | - | - |