code: def _http_schema():
      return (
          SparkContext._active_spark_context._jvm.com.microsoft.azure.synapse.ml.io.http.HTTPSchema
      )
  
imports: import pyspark
  from pyspark import SparkContext
  from pyspark.sql.column import Column
label_desc: Use image node_id 1 for calling a global function with example usage: _http_schema() and returns: SparkContext