add_trees
add_trees(phy, nexml = new("nexml"), append_to_existing_otus = FALSE)
a nexml object containing the phy in nexml format.
a phylo object, multiPhylo object, or list of multiPhylo to be added to the nexml
a nexml object to which we should append this phylo. By default, a new nexml object will be created.
logical, indicating if we should make a new OTU block (default) or append to the existing one.