You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: task.rb
    path of file: ./repos/picoruby/mrbgems/picoruby-task-ext/mrblib
    
    the code of the file until where you have to start completion: require "sandbox"

class Task

  TASKS = {}

  def self.list
    TASKS.values
  end

  def initialize(*args, &block)
    @proc = block
    @args = args
    @name = nil
    id = self.to_s
    Task::TASKS[id] = s
    
  def initialize(*args, &block)
    @proc = block
    @args = args
    @name = nil
    id = self.to_s
    Task::TASKS[id] = self
    @sandbox = Sandbox.new
    if @sandbox.compile "Task::TASKS['#{id}']._start"
      @sandbox.execute
    else
      puts "Compilation failed"
    end