using OwnedTFStatus = tensorflow::TF_StatusPtr;

namespace {
absl::Status ValidateSPPlatform(const SP_Platform& platform) {
  TF_VALIDATE_STRUCT_SIZE(SP_Platform, platform, SP_PLATFORM_STRUCT_SIZE);
  TF_VALIDATE_NOT_NULL(SP_Platform, platform, name);
  TF_VALIDATE_NOT_NULL(SP_Platform, platform, type);
  TF_RETURN_IF_ERROR(
      tensorflow::device_utils::ValidateDeviceType(platform.name));
  TF_RETURN_IF_ERROR(

// "Something" that can be manipulated via calls in the C interface.
class CPlatform : public Platform {
 public:
  explicit CPlatform(SP_Platform platform,
                     void (*destroy_platform)(SP_Platform*),
                     SP_PlatformFns platform_fns,
                     void (*destroy_platform_fns)(SP_PlatformFns*),