code: def load(filename):
      java_obj = SparkContext._active_spark_context._jvm.com.microsoft.azure.synapse.ml.nn.ConditionalBallTree.load(
          filename,
      )
      return ConditionalBallTree(
          None, None, None, None, java_obj=java_obj
      )
  
imports: import sys
  from pyspark import SparkContext
label_desc: Use image node_id 4 for calling the ConditionalBallTree obj's underlying member method code with example usage: obj.load(filename) and returns: ConditionalBallTree