Where to find method of Github API

I’m doing a bot ( using probot ) i want to know where i can find all the Github API method, i didn’t find them on the documentation.

As Exemple i used this two methods

github.issues.addAssignees

github.issues.replaceLabels

Hi @alfalahtaieb,

Thank you for being here! For more information about integrations check out: https://developer.github.com/apps/quickstart-guides/using-the-github-api-in-your-app/