class RuboCop::Cop::Style::SpecialGlobalVars

def autocorrect(node)
  lambda do |corrector|
    global_var, = *node
    while node.parent && node.parent.begin_type? &&
          node.parent.children.one?
      node = node.parent
    end
    corrector.replace(node.source_range, replacement(node, global_var))
  end
end