input: Write a function to create an instance of the "sru" class and call its "search" method with a query string and optional parameters such as collection name, start record number, maximum number of records to return, and record schema. The function should return the "response" object containing the search results. If the search returns no results, the function should return False.
  assert hasattr(search_sru("example query", collection="ANP"), 'records')==True
  assert hasattr(search_sru("non-existent query", collection="ANP"), 'records')==False
  assert search_sru("example query", collection="ANP").nr_of_records > 0
  assert search_sru("example query", collection="DPO").nr_of_records > 0
  assert search_sru("non-existent query", collection="DPO")==False
output: def search_sru(query, collection=None, start_record=1, maximum_records=10, record_schema=None):
      sru_instance = sru()
      response = sru_instance.search(query, collection=collection, start_record=start_record, maximum_records=maximum_records, record_schema=record_schema)
      if response.nr_of_records > 0:
          return response
      else:
          return False