Optimize Clusters::CreateService#execute

app/controllers/projects/clusters/user_controller.rb

@@ -11,7 +11,7 @@ class Projects::Clusters::UserController < Projects::ApplicationController
   def create
     @cluster = ::Clusters::CreateService
       .new(project, current_user, create_params)
-      .execute(nil)
+      .execute
 
     if @cluster.persisted?
       redirect_to project_cluster_path(project, @cluster)

app/services/clusters/create_service.rb

@@ -2,7 +2,7 @@ module Clusters
   class CreateService < BaseService
     attr_reader :access_token
 
-    def execute(access_token)
+    def execute(access_token = nil)
       @access_token = access_token
 
       create_cluster.tap do |cluster|