// Sets `output_attr_value` to the binary-serialized AttrValue proto
// representation of the value of the `attr_name` attr of `func`.
// If `attr_name` attribute is not present, status is set to an error.
TF_CAPI_EXPORT extern void TF_FunctionGetAttrValueProto(
    TF_Function* func, const char* attr_name, TF_Buffer* output_attr_value,
    TF_Status* status);