pub trait ReadableAccountInfo: Sized {
// Required methods
fn pubkey(&self) -> &[u8] ⓘ;
fn owner(&self) -> &[u8] ⓘ;
fn lamports(&self) -> i64;
fn executable(&self) -> bool;
fn rent_epoch(&self) -> i64;
fn data(&self) -> &[u8] ⓘ;
fn write_version(&self) -> i64;
fn txn_signature(&self) -> Option<&[u8]>;
}