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_controller.rb
    path of file: ./repos/gitlabhq/app/controllers/jira_connect
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class JiraConnect::ApplicationController < ApplicationController
  include 
    
  def installation_from_jwt
    strong_memoize(:installation_from_jwt) do
      next unless jwt.iss_claim

      JiraConnectInstallation.find_by_client_key(jwt.iss_claim)
    end
  end