Remove unneeded method StockLocation#propagate_variant

app/models/spree/stock_location.rb

@@ -18,10 +18,6 @@ module Spree
     after_create :create_stock_items
 
     # Wrapper for creating a new stock item respecting the backorderable config
-    def propagate_variant(variant)
-      stock_items.create!(variant:)
-    end
-
     def stock_item(variant)
       stock_items.where(variant_id: variant).order(:id).first
     end
@@ -57,7 +53,7 @@ module Spree
     private
 
     def create_stock_items
-      Variant.find_each { |variant| propagate_variant(variant) }
+      Variant.find_each { |variant| stock_items.create!(variant:) }
     end
   end
 end

app/models/spree/variant.rb

@@ -243,7 +243,7 @@ module Spree
       return unless stock_items.empty?
 
       StockLocation.find_each do |stock_location|
-        stock_location.propagate_variant(self)
+        stock_items.create!(stock_location:)
       end
     end
 

spec/models/spree/stock_location_spec.rb

@@ -20,7 +20,7 @@ module Spree
           subject { StockLocation.new(name: "testing") }
 
           specify do
-            expect(subject).to receive(:propagate_variant).at_least(:once)
+            expect(subject.stock_items).to receive(:create!).at_least(:once)
             subject.save!
           end
         end