class_docstr: This is the AccessAnomaly, a pyspark.ml.Estimator which
  creates the AccessAnomalyModel which is a pyspark.ml.Transformer
code: def user_vec_col(self):
      return self.user_col + "_vector"
  
imports: import os
  from typing import List, Optional, Tuple
  from synapse.ml.cyber.anomaly.complement_access import ComplementAccessTransformer
  from synapse.ml.cyber.feature import indexers, scalers
  from synapse.ml.cyber.utils import spark_utils
  import numpy
  from pyspark import SQLContext
  from pyspark.ml import Estimator, Transformer
  from pyspark.ml.param.shared import Param, Params
  from pyspark.ml.recommendation import ALS
  from pyspark.sql import DataFrame, functions, types
label_desc: Use image node_id 3 for calling the AccessAnomaly obj's underlying member method code with example usage: obj.user_vec_col() and returns: unknown