1.17 -> 1.20.1 migration

[Gimer1820]

hello I have this code that I use since 1.16.5 and that I migrated to 1.17.1 since impossible to find on the forums how to migrate it to 1.20.1, someone can help me

 

new Object() {
            public double getValue(LevelAccessor world, BlockPos pos) {
                BlockEntity blockEntity = world.getBlockEntity(pos);
                double slots = 0;
                if (blockEntity instanceof Container) {slots = (double) ((Container) blockEntity).getContainerSize();};
                return slots;
            }
        }.getValue(world, new BlockPos((int) ${input$x}, (int) ${input$y}, (int) ${input$z}))