IAEStack#fuzzyComparison now compares the same subtypes. (#3384)

To reduce the amount of instanceof checks, it will now compare the same
subtupe.
Comparing an ItemStack and IAEItemStack can simply wrap it before
calling it. Heavy use should already use an IAEStack internal.
Analogue for fluids or other types.

src/api/java/appeng/api/storage/data/IAEStack.java

@@ -149,16 +149,14 @@ public interface IAEStack<T extends IAEStack<T>>
 	boolean equals( Object obj );
 
 	/**
-	 * compare stacks using fuzzy logic
+	 * Compare the same subtype of {@link IAEStack} with another using a fuzzy comparison.
 	 *
-	 * a IAEItemStack to another AEItemStack or a ItemStack.
-	 *
-	 * @param st stacks
-	 * @param mode used fuzzy mode
+	 * @param other The stack to compare.
+	 * @param mode Which {@link FuzzyMode} should be used.
 	 *
 	 * @return true if two stacks are equal based on AE Fuzzy Comparison.
 	 */
-	boolean fuzzyComparison( Object st, FuzzyMode mode );
+	boolean fuzzyComparison( T other, FuzzyMode mode );
 
 	/**
 	 * Slower for disk saving, but smaller/more efficient for packets.
@@ -200,7 +198,7 @@ public interface IAEStack<T extends IAEStack<T>>
 
 	/**
 	 * Returns itemstack for display and similar purposes. Always has a count of 1.
-	 * 
+	 *
 	 * @return itemstack
 	 */
 	ItemStack asItemStackRepresentation();