@CanIgnoreReturnValue
    public Builder setKeySizeBytes(int keySizeBytes) {
      this.keySizeBytes = keySizeBytes;
      return this;
    }
Sets the size of the initial key material (used as input to HKDF).

<p>Must be at least 16, and at least equal to the value set in {@link
#setDerivedKeySizeBytes}
java_src/src/main/java/com/google/crypto/tink/streamingaead/AesCtrHmacStreamingParameters.java