custom code Fell Apart after updating to 2025.3

Hello! I have a bit of custom code that can apply armor trims to armor. This isn't for custom armor trims, just attempting to replicate the vanilla feature of applying armor trims to armor.

My code, which was NOT written by me but by someone else on this forum who was helping me, was working for 2025.2. Here's the custom code snippet:

(patternGet & matGet are local itemstack variables. patternGet is the trim, matGet is the material like lapis or gold.)

        Level level = entity.level();

        Holder.Reference<TrimMaterial> trimMaterial = TrimMaterials.getFromIngredient(level.registryAccess(), matGet).get();
        Holder.Reference<TrimPattern> trimPattern = TrimPatterns.getFromTemplate(level.registryAccess(), patternGet).get();

        itemOutput.applyComponents(
                DataComponentMap.builder()
                        .set(DataComponents.TRIM, new ArmorTrim(trimMaterial, trimPattern))
                        .build()
        );
       

Now in 2025.3 it returns an error when compiling:

* What went wrong: 
Execution failed for task ':compileJava'. 
> Compilation failed; see the compiler output below. 
  Note: Recompile with -Xlint:deprecation for details. 
C:\Users\Thanatos\MCreatorWorkspaces\mc_modern_progression\src\main\java\net\mcreator\mcmodernprogression\procedures\SmithingTableUpdateProcedure.java:462: error: incompatible types: Holder  cannot be converted to Reference  
              Holder.Reference<TrimMaterial> trimMaterial = TrimMaterials.getFromIngredient(level.registryAccess(), matGet).get(); 
                                                                                                                               ^ 
C:\Users\Thanatos\MCreatorWorkspaces\mc_modern_progression\src\main\java\net\mcreator\mcmodernprogression\procedures\SmithingTableUpdateProcedure.java:463: error: cannot find symbol 
              Holder.Reference<TrimPattern> trimPattern = TrimPatterns.getFromTemplate(level.registryAccess(), patternGet).get(); 
                                                                      ^ 
    symbol:   method getFromTemplate(RegistryAccess,ItemStack) 
    location: class TrimPatterns 
  2 errors

I'm at a loss for why this is happening as I'm super inexperienced with custom code. Is there an easy way to fix this? Any help is appreciated!