class_docstr: _ArrowIOTensorComponentFunction will translate call
code: def length(self):
      return self._shape[0]
  
imports: import uuid
  import tensorflow
  from tensorflow_io.python.ops import io_tensor_ops
  from tensorflow_io.python.ops import core_ops
label_desc: Use image node_id 3 for calling the _ArrowIOTensorComponentFunction obj's underlying member method code with example usage: obj.length() and returns: self