Copper Hopper (Java)

Similar functuality to already existing hoppers, using the same recipe but changing the iron for copper.

The main difference comes from the way they interact with all the containter-based blocks that normal hoppers interact with (except: other copper hoppers, hoppers, dispensers, droppers, decorated pots)

• If Copper Hopper contains the same items as the container it is connected to, the item gets transported inside, otherwise it stays inside the Copper Hopper
• Copper Hoppers will not fully drain an item from a container, e.g the Barrel contains: [24 Gold Ingots, 12 Sticks, 5 Diamonds] - Copper hopper will take 23 Gold Ingots, then move the the Sticks, take 11 and move to Diamonds, taking 4
• If Copper Hopper is connected to containers listed in execptions, it functions identical to a regular Hopper

The main purpose of the Copper Hopper is to remove the necessity to fill the containers with singular pieces of whatever items you'd considered 'trash' as well as the needed comparator based counting machines that locks/unlocks the connected hopper to prevent the 'trash' pieces from going further 

Thematically also fits well with Copper Golems who, similary, only transport items inside the chests that already have the same contents 

Edit: Added 'Java'