class_docstr: Container for a sequential model.
  
  # Arguments
  name: String to specify the name of the sequential model. Default is None.
  
  >>> sequential = Sequential(name="seq1")
  creating: createZooKerasSequential
code: def is_built(self):
      try:
          self.get_output_shape()
          return True
      except:
          return False
  
imports: import sys
  from bigdl.dllib.utils.utils import remove_batch
  from .engine.topology import KerasNet
  from bigdl.dllib.utils.common import to_list
  from bigdl.dllib.utils.log4Error import *
  from bigdl.dllib.utils.file_utils import callZooFunc
  from bigdl.dllib.utils.bigdl_export import keras_export
label_desc: Use image node_id 2 for calling the Sequential obj's underlying member method code with example usage: obj.is_built() and returns: True, False