class_docstr: Transform text to array of string tokens.
  
  >>> tokenizer = Tokenizer()
  creating: createTokenizer
class_docstr_tok: ["Transform","text","to","array","of","string","tokens",".",">",">",">","tokenizer","=","Tokenizer","(",")","creating",":","createTokenizer"]
code: def __init__(self, bigdl_type="float"):
      super(Tokenizer, self).__init__(bigdl_type)
  
imports: import sys
  import six
  from zoo.feature.common import Preprocessing
  from zoo.feature.text import TextFeature
  from zoo.common.utils import callZooFunc
label_desc: Use image node_id 1 to create a new Tokenizer object from inherited base classes: TextTransformer with example: obj = Tokenizer(bigdl_type)