# Functions
GetEngine returns initialized peer.Engine.
NewConsensusHandler constructs a new MessageHandler for the plugin.
NewHelper constructs the consensus helper object.
# Constants
DefaultConsensusQueueSize value of 1000.
# Structs
ConsensusHandler handles consensus messages.
EngineImpl implements a struct to hold consensus.Consenter, PeerEndpoint and MessageFan.
Helper contains the reference to the peer's MessageHandlerCoordinator.