code: def resolve_polytomy(
          self,
          dist=1.0,
          support=100,
          recursive=True):
          
          nself = self.copy()
          nself.treenode.resolve_polytomy(
              default_dist=dist,
              default_support=support,
              recursive=recursive)
          nself._coords.update()
          return nself
docs: Returns a copy of the tree with all polytomies randomly resolved.
          Does not transform tree in-place.