@Override
  public String toString() {
    return new ToStringBuilder(this).append("rpcCall", rpcCall).append("param", param)
      .append("clientAddress", clientAddress).append("responseSize", responseSize)
      .append("className", className).append("isSlowLog", isSlowLog)
      .append("isLargeLog", isLargeLog).append("connectionAttributes", connectionAttributes)
      .append("requestAttributes", requestAttributes).toString();
  }
RpcCall details that would be passed on to ring buffer of slow log responses
hbase-server/src/main/java/org/apache/hadoop/hbase/namequeues/RpcLogDetails.java