code: def categorical__int(self, column_name, output_column_prefix):
          
  
          return [_ColumnFunctionTransformation(
              features = [column_name],
              output_column_prefix = output_column_prefix,
              transform_function = lambda col: col.astype(str),
              transform_function_name = "astype(str)")]
docs: Interprets an integer column as a categorical variable.