typedef struct TF_AttrMetadata {
  // A boolean: 1 if the attribute value is a list, 0 otherwise.
  unsigned char is_list;

  // Length of the list if is_list is true. Undefined otherwise.
  int64_t list_size;

  // Type of elements of the list if is_list != 0.
  // Type of the single value stored in the attribute if is_list == 0.
  TF_AttrType type;

  // Total size the attribute value.

constexpr size_t TF_WRITABLE_FILE_OPS_SIZE = sizeof(TF_WritableFileOps);
// LINT.ThenChange()

// LINT.IfChange(read_only_memory_region_ops_version)
constexpr int TF_READ_ONLY_MEMORY_REGION_OPS_API = 0;
constexpr int TF_READ_ONLY_MEMORY_REGION_OPS_ABI = 0;
constexpr size_t TF_READ_ONLY_MEMORY_REGION_OPS_SIZE =
    sizeof(TF_ReadOnlyMemoryRegionOps);
// LINT.ThenChange()

// LINT.IfChange(filesystem_ops_version)