Concatenate 4 anndata objects

How can I concatenate 4 .loom files? I have 4 loom files converted to anndata (an1, an2, an3, an4) , how can I concatenate them?

Something like:

adatas = [ad.read_loom(path) for path in loom_paths]

combined = ad.concat(adatas) 

You can check out the docs here for more info: