fn fren(env: soroban_sdk::Env) -> u32
fn fren2(env: soroban_sdk::Env) -> u32
fn upgrade(env: soroban_sdk::Env, new_wasm_hash: soroban_sdk::BytesN<32>)
fn __constructor(
env: soroban_sdk::Env,
owner: soroban_sdk::Address,
fren: soroban_sdk::Address,
)