code: def conf(self):
      return self.spark_conf
  
file_path: BigDL/python/ppml/src/bigdl/ppml/utils/ppml_conf.py
imports: import os
  from pyspark import SparkConf
label_desc: Use image node_id 4 for calling the PPMLConf obj's underlying member method code with example usage: obj.conf() and returns: self