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: fake_s3.rb
    path of file: ./repos/discourse/spec/support
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class FakeS3
  attr_reader :s3_client

  def self.create
    s3 = self.new
    s3.stub_bucket(SiteSetting.s3_upload_bucket) if
    
  def stub_bucket(full_bucket_name)
    bucket_name, _prefix = full_bucket_name.split("/", 2)

    s3_helper =
      S3Helper.new(
        full_bucket_name,
        (
          if Rails.configuration.multisite
            FileStore::S3Store.new.multisite_tombstone_prefix
          else
            FileStore::S3Store::TOMBSTONE_PREFIX
          end