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: enumerator.rb
    path of file: ./repos/ferrocarril/mruby-sys/vendor/mruby-bc7c5d3/mrbgems/mruby-enumerator/mrblib
    
    the code of the file until where you have to start completion: ##
# enumerator.rb Enumerator class
# See Copyright Notice in mruby.h

##
# A class which allows both internal and external iteration.
#
# An Enumerator can be created by the following methods.
# - {Kernel#to_enum}
# - {Kernel#enum_for}
# - {Enumera
    
  def initialize_copy(obj)
    raise TypeError, "can't copy type #{obj.class}" unless obj.kind_of? Enumerator
    raise TypeError, "can't copy execution context" if obj.fib
    @obj = obj.obj
    @meth = obj.meth
    @args = obj.args
    @fib = nil
    @lookahead = nil
    @feedvalue = nil
    self
  end