Function combine 

pub fn combine(
    lhs: &impl GKernelPackageTraitConst,
    rhs: &impl GKernelPackageTraitConst,
) -> Result<GKernelPackage>

Create a new package based on lhs and rhs.

Parameters

• lhs: “Left-hand-side” package in the process
• rhs: “Right-hand-side” package in the process

Returns

a new kernel package.