Packages 
Package Description
com.yahoo.messagebus
This package contains the main API of the message bus.
com.yahoo.messagebus.network
This package declares the API of the network layer required by the message bus.
com.yahoo.messagebus.network.local  
com.yahoo.messagebus.network.rpc
This package contains an RPC implementation of the Network interface declared in the com.yahoo.messagebus.network package.
com.yahoo.messagebus.network.rpc.test
This package contains utility classes for the unit tests in the com.yahoo.messagebus.network.rpc package.
com.yahoo.messagebus.routing
This package contains all classes and interfaces that concern routing over message bus.
com.yahoo.messagebus.routing.test  
com.yahoo.messagebus.test
This package contains utility classes for the unit tests in the com.yahoo.messagebus package.