fn __constructor(env: soroban_sdk::Env, admin: soroban_sdk::Address)
fn get_admin(env: soroban_sdk::Env) -> soroban_sdk::Address
fn transfer_funds(
env: soroban_sdk::Env,
caller: soroban_sdk::Address,
token: soroban_sdk::Address,
to: soroban_sdk::Address,
amount: i128,
) -> Result<(), soroban_sdk::Error>