fn set_config(
env: soroban_sdk::Env,
admin: soroban_sdk::Address,
registry: soroban_sdk::Address,
fee: i128,
currency: soroban_sdk::Address,
treasury: soroban_sdk::Address,
)
fn upgrade(env: soroban_sdk::Env, hash: soroban_sdk::BytesN<32>)
fn set(
env: soroban_sdk::Env,
address: soroban_sdk::Address,
domain: Option,
) -> Result<(), soroban_sdk::Error>
fn get(env: soroban_sdk::Env, address: soroban_sdk::Address) -> Option