Canonical Roles for each Server-related Stack modules.
The default params used for StackServers.
Creates a default finagle server com.twitter.finagle.Stack.
Creates a default finagle server com.twitter.finagle.Stack. The default stack can be configured via com.twitter.finagle.Stack.Param's in the finagle package object (com.twitter.finagle.param) and specific params defined in the companion objects of the respective modules.