Function call_package_version 

pub fn call_package_version<T: CLTyped + FromBytes>(
    contract_package_hash: ContractPackageHash,
    major_version: Option<u32>,
    contract_version: Option<EntityVersion>,
    entry_point_name: &str,
    runtime_args: RuntimeArgs,
) -> T

Invokes the specified entry_point_name of stored logic at a specific contract_package_hash address, for a specific pair of major_version and contract_version and passing the provided runtime_args to it

If the stored contract calls ret, then that value is returned from call_package_version. If the stored contract calls revert, then execution stops and call_package_version doesn’t return. Otherwise call_package_version returns ().