class_docstr: Base class of Transformers that transform TextFeature.
code: def __init__(self, bigdl_type="float", *args):
      super(TextTransformer, self).__init__(bigdl_type, *args)
  
imports: import sys
  import six
  from bigdl.dllib.feature.common import Preprocessing
  from bigdl.dllib.feature.text import TextFeature
  from bigdl.dllib.utils.file_utils import callZooFunc
  from bigdl.dllib.utils.log4Error import *
label_desc: Use image node_id 1 to create a new TextTransformer object from inherited base classes: Preprocessing with example: obj = TextTransformer(bigdl_type)