code: def exists(self):
          
          path = self.path
          if '*' in path or '?' in path or '[' in path or '{' in path:
              logger.warning("Using wildcards in path %s might lead to processing of an incomplete dataset; "
                             "override exists() to suppress the warning.", path)
          return self.fs.exists(path)
docs: Returns ``True`` if the path for this FileSystemTarget exists; ``False`` otherwise.
  
          This method is implemented by using :py:attr:`fs`.