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: last_three_comments_decorator.rb
    path of file: ./repos/diaspora/app/presenters
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class LastThreeCommentsDecorator
  def initialize(presenter)
    @presenter = presenter
  end

  def as_json(_options={})
    current_user = @presenter
    
  def as_json(_options={})
    current_user = @presenter.current_user
    @presenter.as_json.tap do |post|
      post[:interactions].merge!(comments: CommentPresenter.as_collection(
        @presenter.post.last_three_comments,
        :as_json,
        current_user
      ))
    end
  end