docs: def create_branch(profile, name, branch_off):
      """Create a branch.
  
      Args:
  
          profile
              A profile generated from ``simplygithub.authentication.profile``.
              Such profiles tell this module (i) the ``repo`` to connect to,
              and (ii) the ``token`` to connect with.
  
          name
              The name of the new branch.
  
          branch_off
              The name of a branch to create the new branch off of.
  
      Returns:
          A dict with data about the new branch.
  
      """
      branch_off_sha = get_branch_sha(profile, branch_off)
      ref = "heads/" + name
      data = refs.create_ref(profile, ref, branch_off_sha)
      return data