fixup! Add option to clean up stuff (via unmount) when devices go mis…

…sing. For block devices, this can happen when the block is broken while the computer is unloaded, for example. For items this is more esoteric, but it theoretically means items disappear while the container managing the item as a device is unloaded.

src/main/java/li/cil/oc2/api/bus/device/provider/BlockDeviceProvider.java

@@ -66,7 +66,7 @@ public interface BlockDeviceProvider extends IForgeRegistryEntry<BlockDeviceProv
      * Implementing this is only necessary, if the device holds some out-of-NBT serialized
      * data, or does something similar.
      *
-     * @param query the query that resulted in the device when it still existed, if available.
+     * @param query the query that resulted in a missing device being detected.
      * @param tag   data last serialized by the device that went missing.
      */
     default void unmount(final BlockDeviceQuery query, final CompoundTag tag) {

src/main/java/li/cil/oc2/api/bus/device/provider/ItemDeviceProvider.java

@@ -6,6 +6,7 @@
 import net.minecraft.nbt.CompoundTag;
 import net.minecraftforge.registries.IForgeRegistryEntry;
 
+import javax.annotation.Nullable;
 import java.util.Optional;
 
 /**
@@ -74,8 +75,9 @@ default int getEnergyConsumption(final ItemDeviceQuery query) {
      * Implementing this is only necessary, if the device holds some out-of-NBT serialized
      * data, or does something similar.
      *
-     * @param tag the data last serialized by the device went missing.
+     * @param query the query that resulted in a missing device being detected, if available.
+     * @param tag   the data last serialized by the device went missing.
      */
-    default void unmount(final CompoundTag tag) {
+    default void unmount(@Nullable final ItemDeviceQuery query, final CompoundTag tag) {
     }
 }