tf.raw_ops.TensorArrayConcat

handle A Tensor of type mutable string.
flow_in A Tensor of type float32.
dtype A tf.DType.
element_shape_except0 An optional tf.TensorShape or list of ints. Defaults to None.
name A name for the operation (optional).

A tuple of Tensor objects (value, lengths).
value A Tensor of type dtype.
lengths A Tensor of type int64.