`current_user:` as a keyword argument

app/controllers/groups_controller.rb

@@ -118,7 +118,9 @@ class GroupsController < Groups::ApplicationController
   protected
   def setup_children(parent)
-    @children = GroupChildrenFinder.new(current_user, parent_group: parent, params: params).execute
+    @children = GroupChildrenFinder.new(current_user: current_user,
+                                        parent_group: parent,
+                                        params: params).execute
     @children = @children.page(params[:page])
   end

app/finders/group_children_finder.rb

@@ -3,7 +3,7 @@ class GroupChildrenFinder
   attr_reader :current_user, :parent_group, :params
-  def initialize(current_user = nil, parent_group:, params: {})
+  def initialize(current_user: nil, parent_group:, params: {})
     @current_user = current_user
     @parent_group = parent_group
     @params = params

app/serializers/group_child_entity.rb

@@ -55,7 +55,8 @@ class GroupChildEntity < Grape::Entity
          unless: lambda { |_instance, _options| project? }
   def children_finder
-    @children_finder ||= GroupChildrenFinder.new(request.current_user, parent_group: object)
+    @children_finder ||= GroupChildrenFinder.new(current_user: request.current_user,
+                                                 parent_group: object)
   end
   def children_count

spec/finders/group_children_finder_spec.rb

@@ -4,7 +4,9 @@ describe GroupChildrenFinder do
   let(:user) { create(:user) }
   let(:group) { create(:group) }
   let(:params) { {} }
-  subject(:finder) { described_class.new(user, parent_group: group, params: params) }
+  subject(:finder) do
+    described_class.new(current_user: user, parent_group: group, params: params)
+  end
   before do
     group.add_owner(user)