default void postIsRpcThrottleEnabled(final ObserverContext<MasterCoprocessorEnvironment> ctx,
    final boolean rpcThrottleEnabled) throws IOException {
  }
Called after getting if is rpc throttle enabled.
@param ctx                the coprocessor instance's environment
@param rpcThrottleEnabled the rpc throttle enabled value
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/MasterObserver.java