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: watches_dependency.rb
    path of file: ./repos/bluedoc/app/models/comment
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

cla
    
  def watch_commentable_on_create
    return if commentable.blank?
    return if user.blank?

    case commentable_type
    when "Doc"
      user.watch_comment_doc(commentable)
    when "Note"
      user.watch_comment_note(commentable)
    when "Issue"
      user.watch_comment_issue(commentable)
    end