input: Write a function to create an instance of the "sru" class and call its "search" method, passing in 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 results of the search.
  
  
  def search_sru(query, collection=False, startrecord=1, maximumrecords=1, recordschema=False):
      sru_instance = sru()
      response_object = sru_instance.search(query, collection, startrecord, maximumrecords, recordschema)
      return response_object
  
  # Test cases
  test_response = search_sru("example query", "ANP", 1, 10, "ddd")
  assert test_response is not None
  assert test_response.titles != []
  
  test_response_empty = search_sru("nonexistent query", "ANP", 1, 1)
  assert test_response_empty is False
  
output: def search_sru(query, collection=False, startrecord=1, maximumrecords=1, recordschema=False):
      sru_instance = sru()
      response_object = sru_instance.search(query, collection, startrecord, maximumrecords, recordschema)
      return response_object