class_docstr: Class for creating and destroying SparkSession.
class_docstr_tok: ["Class","for","creating","and","destroying","SparkSession","."]
code: def master(self: SparkProvider) -> str:  # noqa: D102
      return os.getenv("SPARK_MASTER", STANDALONE)
  
file_path: quinn/quinn/spark.py
imports: from __future__ import annotations
  import logging
  import os
  from pyspark import SparkConf
  from pyspark.sql import SparkSession
label_desc: Use image node_id 2 for calling the SparkProvider obj's underlying member method code with example usage: obj.master() and returns: os