Godzzi

Had the same issue GX Documentation: `row_condition='col("foo").notNull()' # foo is not null` Spark Documentation: `column.IsNotNull()` [see: https://spark.apache.org/docs/latest/api/python/reference/pyspark.sql/api/pyspark.sql.Column.isNotNull.html] Traceback error: `raise gx_exceptions.MetricResolutionError(\ngreat_expectations.exceptions.exceptions.MetricResolutionError: unable to parse condition: col('column_name').notNULL()\n" `