code: def IsDeletedOrDefault(clean_lines, linenum):
    
    open_paren = clean_lines.elided[linenum].find('(')
    if open_paren < 0:
      return False
    (close_line, _, close_paren) = CloseExpression(
        clean_lines, linenum, open_paren)
    if close_paren < 0:
      return False
    return Match(r'\s*=\s*(?:delete|default)\b', close_line[close_paren:])
docs: Check if current constructor or operator is deleted or default.
  
    Args:
      clean_lines: A CleansedLines instance containing the file.
      linenum: The number of the line to check.
    Returns:
      True if this is a deleted or default constructor.