*   `tf.function(jit_compile=True)`'s that use `Scatter`.
        *   (since v2.7) Stateful ops used in `tf.data.Dataset`
        *   (since v2.7) `tf.convert_to_tensor` when fed with (sparse)
            `tf.IndexedSlices` (because it uses `tf.math.unsorted_segment_sum`)
        *   (since v2.7) `tf.gather` backprop (because `tf.convert_to_tensor`

UnmarshalBinary([]byte) error } type HMAC struct { opad, ipad []byte outer, inner fips140.Hash // If marshaled is true, then opad and ipad do not contain a padded // copy of the key, but rather the marshaled state of outer/inner after // opad/ipad has been fed into it. marshaled bool // forHKDF and keyLen are stored to inform the service indicator decision. forHKDF bool keyLen int } func (h *HMAC) Sum(in []byte) []byte { // Per FIPS 140-3 IG C.M, key lengths below 112 bits are only allowed for // legacy use...