pub fn pack_merkle_context(
merkle_context: &[MerkleContext],
remaining_accounts: &mut HashMap<Pubkey, usize>,
) -> Vec<PackedMerkleContext>
pub fn pack_merkle_context(
merkle_context: &[MerkleContext],
remaining_accounts: &mut HashMap<Pubkey, usize>,
) -> Vec<PackedMerkleContext>