@Override
    public String toString() {
      return name;
    }
Describes details of the mac computation.

<p>The standard AES CMAC key is used for variant "NO_PREFIX". Other variants slightly change
how the mac is computed, or add a prefix to every computation depending on the key id.
java_src/src/main/java/com/google/crypto/tink/mac/AesCmacParameters.java