With reference to the above code, answer the following four questions:

$1.$ What commitment protocol is used in this code?

$2.$ What should be modified in this code if the commitment protocol $$Overcommitted$$ is

used?

$3.$ What should be modified in this code if the commitment protocol $$Open$-$minded

commitment$$ is used?

$4.$ Assume the commitment protocol $$Single$-$minded commitment$$ is used in the above code.

When should an agent stop to reconsider its intentions?