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: base_controller.rb
    path of file: ./repos/pivorak-web-app/components/courses/spec/dummy/app/controllers/admin
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

# Mock of original controller
module Admin
  class BaseController < ApplicationController
    helper_method :current_user, :line_chart

    def self.add_breadcrumb(*); end

    def line_chart(*); end

    def edit
      render_form
    end

    def current_user
      User.find_or_create_by(email: 'test@test.com', first_name: 'Test', last_name: 'User')
    end

    private

    def render_form
      render :form
    end

    def semantic_breadcrumb(*); end

    def add_breadcrumb(resource, label: :title, path: nil)
      if resource.instance_of?(String)
        semantic_breadcrumb I18n.t(resource), path
      else
        semantic_breadcrumb resource.send(lab
    
    def self.add_breadcrumb(*); end

    def line_chart(*); end

    def edit
      render_form
    end

    def current_user
      User.find_or_create_by(email: 'test@test.com', first_name: 'Test', last_name: 'User')
    end

    private

    def render_form
      render :form
    end

    def semantic_breadcrumb(*); end

    def add_breadcrumb(resource, label: :title, path: nil)
      if resource.instance_of?(String)
        semantic_breadcrumb I18n.t(resource), path
      else
        semantic_breadcrumb resource.send(label), path
      end
    end

    def add_new_breadcump
      add_breadcrumb 'words.new'
    end

    def add_edit_breadcump
      add_breadcrumb 'words.edit'
    end

    def react_to(action)
      if action
        flash_success && default_redirect
      else
        flash_error && render_form
      end
    end

    def flash_success(key = nil)
      add_flash(:success, key)
    end

    def flash_error(key = nil)
      add_flash(:error, key)
    end

    def add_flash(type, key = nil)
      resource = params[:controller].split('/').last.singularize.capitalize
      suffix = params[:action] == 'destroy' ? 'ed' : 'd'
      action = "#{params[:action]}#{suffix}"

      flash[type] = t(key || type, scope: :notifications, resource: resource, action: action)
    end

    def current_user
      @current_user ||= User.where(id: 1).first_or_create(email: 'test@user.com', first_name: 'Test', last_name: 'User')
    end
  end