docs: def get_file_path(self, digest):
          """Retrieve the absolute path to the file with the given digest
  
            Args:
              digest -- digest of the file
            Returns:
              String rapresenting the absolute path of the file
          """
          relPath = Fsdb.generate_tree_path(digest, self._conf['depth'])
          return os.path.join(self.fsdbRoot, relPath)