PipelineStep

interface PipelineStep

onInbound	`open suspend fun onInbound(context: PipelineContext, msg: Message): Unit`
onOutbound	`open suspend fun onOutbound(context: PipelineContext, msg: Message): Unit`

AuthStep	`class AuthStep : PipelineStep`
BlankStep	`class BlankStep : PipelineStep`
EchoStep	`class EchoStep : PipelineStep`
IdentityStep	`class IdentityStep : PipelineStep`
PlacementStep	`class PlacementStep : PipelineStep`
RoutingStep	`class RoutingStep : PipelineStep`
TransportStep	`class TransportStep : PipelineStep`
VerifyStep	`class VerifyStep : PipelineStep`