initialize_dup

# File activerecord/lib/active_record/core.rb, line 339
    def initialize_dup(other) # :nodoc:
      @attributes = @attributes.dup
      @attributes.reset(self.class.primary_key)

      _run_initialize_callbacks

      @aggregation_cache = {}
      @association_cache = {}

      @new_record  = true
      @destroyed   = false

      super
    end