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: application_helper.rb
    path of file: ./repos/stackneveroverflow/app/helpers
    
    the code of the file until where you have to start completion: module ApplicationHelper
 def full_title(page_title)
  base_title 
    
 def full_title(page_title)
  base_title = "Stack Never Overflow"
  if page_title.empty?
    base_title
  else
    "#{base_title} | #{page_title}"
  end