adjusting to 1.16

src/main/java/carpet/mixins/Memory_scarpetMixin.java

@@ -0,0 +1,18 @@
+package carpet.mixins;
+
+import carpet.fakes.MemoryInterface;
+import net.minecraft.entity.ai.brain.Memory;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+@Mixin(Memory.class)
+public class Memory_scarpetMixin implements MemoryInterface
+{
+    @Shadow private long expiry;
+
+    @Override
+    public long getScarpetExpiry()
+    {
+        return expiry;
+    }
+}