getAssetID: identifies the asset's type and address which can be called externally.
qtyOfManagedAssets: this function gives the overview of all the assets in Fuji Vaults.
balanceOf: generic function to receive an address' balance.
mint: this function mints a new Fuji token when a user deposits collateral into the protocol.
burn: when a Fuji token is redeemd and collateral withdrawn, the burn function burns the Fuji token and thus the debt from the protocol.
updateState: function to update the Fuji1155 account.