code: def sanitize_clause(clause: str) -> str:
      # clause = sqlparse.format(clause, strip_comments=True)
      statements = sqlparse.parse(clause)
      if len(statements) != 1:
          raise QueryClauseValidationException(
              "Clause contains multiple statements"
          )
      open_parens = 0
  
      previous_token = None
      for token in statements[0]:
          if (
              token.value == "/"
              and previous_token
              and previous_token.value == "*"
          ):
              raise QueryClauseValidationException(
                  "Closing unopened multiline comment"
              )
          if (
              token.value == "*"
              and previous_token
              and previous_token.value == "/"
          ):
              raise QueryClauseValidationException(
                  "Unclosed multiline comment"
              )
          if token.value in (")", "("):
              open_parens += 1 if token.value == "(" else -1
              if open_parens < 0:
                  raise QueryClauseValidationException(
                      "Closing unclosed parenthesis in filter clause"
                  )
          previous_token = token
      if open_parens > 0:
          raise QueryClauseValidationException(
              "Unclosed parenthesis in filter clause"
          )
  
      if previous_token and previous_token.ttype in Comment:
          if previous_token.value[-1] != "\n":
              clause = f"{clause}\n"
  
      return clause
  
imports: import logging
  import re
  from collections.abc import Iterator
  from dataclasses import dataclass
  from typing import Any, cast, Optional
  from urllib import parse
  import sqlparse
  from sqlalchemy import and_
  from sqlparse import keywords
  from sqlparse.lexer import Lexer
  from sqlparse.sql import Identifier, IdentifierList, Parenthesis, remove_quotes, Token, TokenList, Where
  from sqlparse.tokens import Comment, CTE, DDL, DML, Keyword, Name, Punctuation, String, Whitespace, Wildcard
  from sqlparse.utils import imt
  from superset.exceptions import QueryClauseValidationException
  from superset.utils.backports import StrEnum
label_desc: Use image node_id 5 for calling a global function with example usage: sanitize_clause(clause) and returns: clause