docstr: Gets the graph folder.
docstr_tok: ["Gets","the","graph","folder","."]
code: def getGraphFolder(self):
      """Gets the graph folder."""
      return self.getOrDefault(self.graphFolder)
  
imports: from pyspark.ml import Model, Estimator
  from pyspark.ml.util import DefaultParamsWritable, DefaultParamsReadable
  from sparknlp.common import *
label_desc: Use image node_id 9 for calling the TFNerDLGraphBuilder obj's underlying member method code with example usage: obj.getGraphFolder() and returns: self