docstr: Gets output column name of annotations.
code: def getOutputCol(self):
      """Gets output column name of annotations."""
      return self.getOrDefault(self.outputCol)
  
file_path: spark-nlp/python/sparknlp/common/annotator_properties.py
imports: from pyspark.ml.param import TypeConverters, Params, Param
label_desc: Use image node_id 5 for calling the AnnotatorProperties obj's underlying member method code with example usage: obj.getOutputCol() and returns: self