Generic Mecanim: copy animations from one Animator to another sharing same skeleton, like on Legacy?

Hello! Using Legacy Animation I did it like this:

I had the rigged character model and added Animation component to it (AddComponent()). then loaded models with animation (sharing same skeleton), got their Animation components, then added clips from their Animation States (with AddClip) to the character's Animation component and it worked perfect.

Is this possible with Mecanim? To copy animations from one Animator to another if the skeleton is same? What is approximate algorythm for this?

Was looking for method like Animator.AddClip(), but vainly.