pub unsafe extern "C" fn create_db(
serialized_cost_model: *const u8,
serialized_cost_model_len: u32,
serialized_network_hash: *const u8,
serialized_genesis_root_contract: *const u8,
serialized_genesis_root_contract_len: u32,
serialized_network_config: *const u8,
serialized_network_config_len: u32,
) -> CreateDBResult