input: Write a function that uses the provided Python API for KB SRU to perform a search query and retrieve specific information from the search results. The function should accept a query string and optionally a collection name, start record number, maximum number of records to return, and record schema. The function should return a "response" object containing the search results. If the search results contain any titles, creators, or subjects, the function should print those details. The function should be named `search_kb_sru`.
  
  
  def search_kb_sru(query, collection=False, startrecord=1, maximumrecords=1, recordschema=False):
      sru_instance = sru()
      response_obj = sru_instance.search(query, collection=collection, startrecord=startrecord, maximumrecords=maximumrecords, recordschema=recordschema)
      
      if response_obj:
          if response_obj.titles:
              print("Titles:", response_obj.titles)
          if response_obj.creators:
              print("Creators:", response_obj.creators)
          if response_obj.subjectsBrinkman:
              print("Subjects (Brinkman):", response_obj.subjectsBrinkman)
      
      return response_obj
  
  # Test cases
  assert search_kb_sru("Python", collection="GGC") != None
  assert search_kb_sru("Python", collection="DPO") != None
  assert search_kb_sru("Python", collection="BYVANCK") != None
  assert search_kb_sru("Python", collection="SGD") != None
  assert search_kb_sru("Python", collection="ANP") != None
  
output: def search_kb_sru(query, collection=False, startrecord=1, maximumrecords=1, recordschema=False):
      sru_instance = sru()
      response_obj = sru_instance.search(query, collection=collection, startrecord=startrecord, maximumrecords=maximumrecords, recordschema=recordschema)
      
      if response_obj:
          if response_obj.titles:
              print("Titles:", response_obj.titles)
          if response_obj.creators:
              print("Creators:", response_obj.creators)
          if response_obj.subjectsBrinkman:
              print("Subjects (Brinkman):", response_obj.subjectsBrinkman)
      
      return response_obj