# File lib/Borges/Utilities/WeakIdentityKeyHash.rb, line 120
    def get_obj
      unless ID_REV_MAP[self.object_id] == @internal_id then
        raise RefError, "Illegal Reference - probably recycled", caller(2)
      end

      begin
        return ObjectSpace._id2ref(@internal_id)
      rescue RangeError
        raise RefError, "Illegal Reference - probably recycled", caller(2)
      end
    end