code: def listdir(self, directory_path=None, hidden_files=False):
          
          # Change current directory if a directory path is specified, otherwise use current
          if directory_path:
              self.chdir(directory_path)
  
          # Exclude hidden files
          if not hidden_files:
              return [path for path in self.session.nlst() if not path.startswith('.')]
  
          # Include hidden files
          else:
              return self.session.nlst()
docs: Return a list of files and directories in a given directory.
  
          :param directory_path: Optional str (defaults to current directory)
          :param hidden_files: Include hidden files
          :return: Directory listing