Stacks all tensors in the list.

Requires that all tensors have the same shape.

input_handle: the input list tensor: the gathered result num_elements: optional. If not -1, the number of elements in the list.

input_handle A Tensor of type variant.
element_shape A Tensor of type int32.
element_dtype A tf.DType.
num_elements An optional int. Defaults to -1.
name A name for the operation (optional).

A Tensor of type element_dtype.