suppress AutoValue mutable byte array warnings

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/CommandApdu.java

@@ -33,6 +33,7 @@ public abstract class CommandApdu {
     public abstract int getINS();
     public abstract int getP1();
     public abstract int getP2();
+    @SuppressWarnings("mutable")
     public abstract byte[] getData();
     public abstract int getNe();
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/OpenPgpCapabilities.java

@@ -36,7 +36,9 @@ public abstract class OpenPgpCapabilities {
     private static final int MAX_PW1_LENGTH_INDEX = 1;
     private static final int MAX_PW3_LENGTH_INDEX = 3;
 
+    @SuppressWarnings("mutable")
     public abstract byte[] getAid();
+    @SuppressWarnings("mutable")
     abstract byte[] getHistoricalBytes();
 
     @Nullable
@@ -48,6 +50,7 @@ public abstract class OpenPgpCapabilities {
     @Nullable
     @SuppressWarnings("mutable")
     public abstract byte[] getFingerprintAuth();
+    @SuppressWarnings("mutable")
     public abstract byte[] getPwStatusBytes();
 
     public abstract KeyFormat getSignKeyFormat();

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/ResponseApdu.java

@@ -28,6 +28,7 @@ import com.google.auto.value.AutoValue;
 public abstract class ResponseApdu {
     private static final int APDU_SW_SUCCESS = 0x9000;
 
+    @SuppressWarnings("mutable")
     public abstract byte[] getData();
     public abstract int getSw1();
     public abstract int getSw2();

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/SecurityTokenInfo.java

@@ -47,6 +47,7 @@ public abstract class SecurityTokenInfo implements Parcelable {
 
     public abstract List<byte[]> getFingerprints();
     @Nullable
+    @SuppressWarnings("mutable")
     public abstract byte[] getAid();
     @Nullable
     public abstract String getUserId();

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/usb/CcidTransceiver.java

@@ -269,6 +269,7 @@ public class CcidTransceiver {
         public abstract byte getError();
         public abstract byte getChainParameter();
         @Nullable
+        @SuppressWarnings("mutable")
         public abstract byte[] getData();
 
         static CcidDataBlock parseHeaderFromBytes(byte[] headerBytes) {