// CHECK:      "tf.Identity"({{.+}}) :
    %1:2 = tf_executor.island wraps "tf.Identity"(%0#0) : (tensor<i64>) -> tensor<i64>
    // CHECK:      tf_executor.NextIteration.Sink
    // CHECK-SAME: device = "/job:localhost/replica:0/task:0/device:TPU:0"
    tf_executor.NextIteration.Sink [%0#1] %1#0 : tensor<i64> {device = "/job:localhost/replica:0/task:0/device:TPU:0", T = "tfdtype$DT_INT64"}

"tfdtype$DT_FLOAT"], dense_shapes = [#tf_type.shape<>, #tf_type.shape<>], device = "", num_sparse = 2 : i64, ragged_split_types = [], ragged_value_types = [], resultSegmentSizes = array<i32: 2, 2, 2, 2, 0, 0>, sparse_types = ["tfdtype$DT_STRING", "tfdtype$DT_INT64"]} : (tensor<32x!tf_type.string>, tensor<0x!tf_type.string>, tensor<2x!tf_type.string>, tensor<2x!tf_type.string>, tensor<0x!tf_type.string>, tensor<0xf32>, tensor<0xf32>) -> (tensor<?x2xi64>, tensor<?x2xi64>, tensor<?x!tf_type.string>, tensor<?xi64>,...