# Functions
NewCheckpointInit creates a new CheckpointInit.
NewForwardUpdateSync creates a new ForwardUpdateSync.
NewHeadSync creates a new HeadSync.
# Variables
data: types.FinalityUpdate.
data: types.HeadInfo.
data: types.OptimisticUpdate.
# Structs
CheckpointInit implements request.Module; it fetches the light client bootstrap data belonging to the given checkpoint hash and initializes the committee chain if successful.
ForwardUpdateSync implements request.Module; it fetches updates between the committee chain head and each server's announced head.
HeadSync implements request.Module; it updates the validated and prefetch heads of HeadTracker based on the EvHead and EvSignedHead events coming from registered servers.