input: 
  from typing import List
  
  def execute_search(query: str, collection: str = None, start_record: int = 1, max_records: int = 1, record_schema: str = None) -> bool:
      """
      Performs a search using the sru class of the KB SRU Python API. The search
      can be customized by specifying a query string, optionally a collection name,
      start record number, maximum number of records to return, and record schema.
      The method will return a boolean indicating whether the search was successful.
  
      >>> execute_search("book", "ANP", 1, 10, "dcx")
      True
      >>> execute_search("", "GGC", 1, 5, "dcx")
      False
      """
  
output:     if not query:
          return False
      
      try:
          from sru import SRU
          sru_client = SRU()
          sru_client.search(query, collection=collection, start_record=start_record, max_records=max_records, record_schema=record_schema)
          return True
      except Exception as e:
          return False