global

def exclusive_with?(other)
  return false unless other
  return false if may_jump_to_other_branch?
  other.each_ancestor(include_self: true) do |other_ancestor|
    if control_node.equal?(other_ancestor.control_node)
      return !child_node.equal?(other_ancestor.child_node)
    end
  end
  if parent
    parent.exclusive_with?(other)
  else
    false
  end
end