fn hello(
env: soroban_sdk::Env,
to: soroban_sdk::String,
) -> soroban_sdk::Vec
fn hello_requires_auth(
env: soroban_sdk::Env,
caller: soroban_sdk::Address,
) -> soroban_sdk::Vec
fn hello_requires_two_auths(
env: soroban_sdk::Env,
caller: soroban_sdk::Address,
caller2: soroban_sdk::Address,
) -> soroban_sdk::Vec
fn hello_reverts(
env: soroban_sdk::Env,
) -> Result, soroban_sdk::Error>