};

}  // namespace detail

// Safe containers for an owned TF_Tensor. On destruction, the tensor will be
// deleted by TF_DeleteTensor.
using Safe_TF_TensorPtr = std::unique_ptr<TF_Tensor, detail::TFTensorDeleter>;
Safe_TF_TensorPtr make_safe(TF_Tensor* tensor);

// Safe containers for an owned TFE_TensorHandle. On destruction, the handle
// will be deleted by TFE_DeleteTensorHandle.
using Safe_TFE_TensorHandlePtr =

  //                 FlatTensorFunction. FlatTensorFunction will register this
  //                 function_def with `ctx` on creation, and de-register it on
  //                 destruction. function_def must be non-null, but
  //                 otherwise has no lifetime requirements.
  //  captures - The captured TensorHandles associated with this

     * [KaPropertySymbol]s instead.
     *
     * E.g., for the following code:
     * ```
     * data class X(val y: Int, val z: String)
     * fun foo() {
     *      val (a, _) = x // the destruction
     * }
     * ```
     *
     * the following symbols will be created (pseudocode)
     * ```
     * val a: Int
     * val _: String
     * ```
     */

///
/// NOTE: Prefer to use SavedModelBundleLite in new code, as it consumes less
/// RAM.
struct SavedModelBundle : public SavedModelBundleInterface {
  /// A TensorFlow Session does not Close itself on destruction. To avoid
  /// resource leaks, we explicitly call Close on Sessions that we create.
  ~SavedModelBundle() override {
    if (session) {
      session->Close().IgnoreError();
    }
  }

  }

  // Constructs a `bytes` object by serializing `src`.
  static handle cast(ProtoT&& src, return_value_policy policy, handle parent) {
    // release() prevents the reference count from decreasing upon the
    // destruction of py::bytes and returns a raw python object handle.
    return py::bytes(Serialize(src)).release();
  }

  // Constructs a `bytes` object by serializing `src`.

     * Called at the start of the root build, immediately after the creation of the root build services.
     */
    void afterStart();

    /**
     * Called at the completion of the root build, immediately before destruction of the root build services.
     */
    void beforeComplete();

  //                 TFConcreteFunction. TFConcreteFunction will register this
  //                 function_def with `ctx` on creation, and de-register it on
  //                 destruction. function_def must be non-null, but
  //                 otherwise has no lifetime requirements.
  //  captures - The captured TensorHandles associated with this
  //             TFConcreteFunction.

namespace tensorflow {

// Information about the state of a variable passed as input to the _XlaCompile
// and _XlaRun operators.  Unlocks the resource variable and decrements its
// refcount on destruction.
class VariableInfo {
 public:
  explicit VariableInfo(int index, absl::string_view name, Var* var,
                        const std::optional<ManagedStackTrace>&

  //                 TFSignatureDefFunction. TFSignatureDefFunction will
  //                 register this function_def with `ctx` on creation, and
  //                 de-register it on destruction. function_def must be
  //                 non-null, but otherwise has no lifetime requirements.
  //  captures - The captured TensorHandles associated with this
  //             TFConcreteFunction.

      context(), DT_FLOAT, {}, nullptr, &handle));
  // The created TensorHandle should be a DT_Resource
  EXPECT_EQ(handle->DataType(), DT_RESOURCE);
}

// Sanity check for variable destruction
TEST_F(VariableOpsTest, DestroyVariableSuccessful) {
  // Create a DT_Resource TensorHandle that points to a scalar DT_FLOAT tensor
  ImmediateTensorHandlePtr handle;