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: checkbox.rb
    path of file: ./repos/expertiza/app/models
    
    the code of the file until where you have to start completion: class Checkbox < UnscoredQuestion
  include ActionView::Helpers
  # This method returns what to display if an instructor (etc.) is creating or editing a questionnaire (questionnaires_controller.rb)
  def edit(count)
   
    
  def view_completed_question_if_column_header
    curr_question = Question.find(id)
    next_question = Question.where('seq > ?', curr_question.seq).order(:seq).first
    html = if next_question.type == 'ColumnHeader'
             '</td></tr>'
           elsif next_question.type == 'TableHeader'
             '</td></tr></table>'
           else
             ''
           end