pub trait LoaderTransaction {
fn loader_write(
from_keypair: &Keypair,
loader: Pubkey,
offset: u32,
bytes: Vec<u8>,
last_id: Hash,
fee: u64
) -> Self;
fn loader_finalize(
from_keypair: &Keypair,
loader: Pubkey,
last_id: Hash,
fee: u64
) -> Self;
}