How to apply animation preset to a selected or all layers through a script?

Hello all,

I have several layers and I want to apply a random animation preset to each layer through a script.

I know how to apply an effect, for eg. [somelayer].property("Effects").addProperty("Block Dissolve"),

but how to apply a whole animation preset (eg. Block Dissolve - digital or Card Wipe - 3D pixelstorm).

Thanks!