fn hello(env: soroban_sdk::Env) -> soroban_sdk::Vec
fn add_expense(
env: soroban_sdk::Env,
owner: soroban_sdk::Address,
hash: soroban_sdk::BytesN<32>,
) -> u32
fn get_expense(env: soroban_sdk::Env, id: u32) -> Option
fn verify_expense(
env: soroban_sdk::Env,
id: u32,
hash: soroban_sdk::BytesN<32>,
) -> bool
fn get_user_expenses(
env: soroban_sdk::Env,
owner: soroban_sdk::Address,
) -> soroban_sdk::Vec