docs: def EscapeWildcards(string):
    """Escapes wildcard characters for strings intended to be used with `LIKE`.
  
    Databases don't automatically escape wildcard characters ('%', '_'), so any
    non-literal string that is passed to `LIKE` and is expected to match literally
    has to be manually escaped.
  
    Args:
      string: A string to escape.
  
    Returns:
      An escaped string.
    """
    precondition.AssertType(string, Text)
    return string.replace("%", r"\%").replace("_", r"\_")