code: def jboss_standalone_conf_file(broker):
          
          log_files = broker[JDRSpecs.jboss_standalone_server_log]
          if log_files:
              log_content = log_files[-1].content
              results = []
              for line in log_content:
                  if "sun.java.command =" in line and ".jdr" not in line and "-Djboss.server.base.dir" in line:
                      results.append(line)
              if results:
                  # default is standalone.xml
                  config_xml = 'standalone.xml'
                  java_command = results[-1]
                  if '--server-config' in java_command:
                      config_xml = java_command.split('--server-config=')[1].split()[0]
                  elif '-c ' in java_command:
                      config_xml = java_command.split('-c ')[1].split()[0]
                  return [config_xml]
          return []
docs: Get which jboss standalone conf file is using from server log