code: def lsbranch(self, astr_path=""):
              
              self.sCore.reset()
              str_cwd       = self.cwd()
              if len(astr_path): self.cdnode(astr_path)
              self.sCore.write('%s' % self.sbranch_current.dict_branch.keys())
              str_ls = self.sCore.strget()
              if len(astr_path): self.cdnode(str_cwd)
              return str_ls
docs: Print/return the set of nodes in current branch