input:  python
  from typing import List
  import os
  
  def list_directory_contents(directory: str) -> List[str]:
      """
      List the contents of a given directory.
  
      >>> list_directory_contents('.')
      ['file1.txt', 'file2.txt', 'directory1']
      """
      return os.listdir(directory)
  
output:     return os.listdir(directory)