Given a single tensor (tensor), this operation returns a tensor of the
same type and shape as tensor with all elements set to zero. Optionally,
you can use dtype to specify a new type for the returned tensor.
A type for the returned Tensor. Must be float16, float32,
float64, int8, uint8, int16, uint16, int32, int64,
complex64, complex128, bool or string. (optional)
name
A name for the operation (optional).
optimize
if True, attempt to statically determine the shape of tensor
and encode it as a constant. (optional, defaults to True)