pub fn create_initialize_merkle_tree_instruction(
payer: Pubkey,
registered_program_pda: Option<Pubkey>,
merkle_tree_pubkey: Pubkey,
nullifier_queue_pubkey: Pubkey,
state_merkle_tree_config: StateMerkleTreeConfig,
nullifier_queue_config: NullifierQueueConfig,
program_owner: Option<Pubkey>,
forester: Option<Pubkey>,
index: u64,
) -> Instruction