retconstorage.models.Container

```py
class Container(models.model):
parent = models.ForeignKey("self",null=True,blank=True,related_name="children_containers")
basename = models.TextField()

def abs_path(self):
if self.parent is None: return self.basename
else: return os.path.join(selfparent,basename,self.basename)
def is_dir(self): self.os.is_dir(self.abs_path)
def is_archive(self): return not self.is_dir
```