input: Write a function to create an instance of the "sru" class and perform a search using the "search" method, providing a query string and optional parameters for collection name, start record number, maximum number of records to return, and record schema. The function should return the search results in the form of a "response" object. If the search results contain no records, the function should return False.
  
  
  assert sru_search("sample query", "GGC", 1, 5, "dcx") == response
  assert sru_search("another query", "BYVANCK", 2, 3) == response
  assert sru_search("empty query", "DPO") == False
  
output: def sru_search(query, collection_name=None, start_record=1, maximum_records=None, record_schema=None):
      sru_instance = sru()
      response = sru_instance.search(query, collection_name, start_record, maximum_records, record_schema)
      if len(response.records) == 0:
          return False
      return response