class_docstr: Connection Configuration for RMQ.
code: def get_requested_heartbeat(self) -> int:
      return self._j_rmq_connection_config.getRequestedHeartbeat()
  
imports: from pyflink.common import SerializationSchema, DeserializationSchema
  from pyflink.datastream.functions import SinkFunction, SourceFunction
  from pyflink.java_gateway import get_gateway
label_desc: Use image node_id 14 for calling the RMQConnectionConfig obj's underlying member method code with example usage: obj.get_requested_heartbeat() and returns: self