docs: def rlgt(self, time=None, times=1,
               disallow_sibling_lgts=False):
          """ Uses class LGT to perform random lateral gene transfer on
          ultrametric tree """
  
          lgt = LGT(self.copy())
          for _ in range(times):
              lgt.rlgt(time, disallow_sibling_lgts)
          return lgt.tree