solana/docs/art/passive-staking-callflow.msc

msc {
  hscale="2.2";
   VoteSigner,
   Validator,
   Cluster,
   StakerX,
   StakerY;

   |||;
  Validator box Validator [label="boot.."];

  VoteSigner <:> Validator [label="register\n\n(optional)"];
  Validator => Cluster [label="VoteState::Initialize(VoteSigner)"];
  StakerX => Cluster [label="StakeState::Delegate(Validator)"];
  StakerY => Cluster [label="StakeState::Delegate(Validator)"];

     |||;
  Validator box Cluster [label="\nvalidate\n"];
  Validator => VoteSigner [label="sign(vote)"];
  VoteSigner >> Validator [label="signed vote"];

  Validator => Cluster [label="gossip(vote)"];
  ...;
  ... ;
  Validator abox Validator [label="\nmax\nlockout\n"];
       |||;
  Cluster box Cluster [label="credits redeemed (at epoch)"];


}