reshape operation in TFRT

Hi   I want to reshape the input feature data of mnist.mlir ("integrationtest/mnist/test_data/mnist_tensors.btf") which has [100, 784] into a shape such as [100,28,28,1],  and follow that with a conv operation,  but I can't find any reshape example in mlir test,  could anyone give me some suggestions?  does current TFRT support this operation?