Merge remote-tracking branch 'origin/GP-3979_ghidragon_program_caching--SQUASHED'

Ghidra/Framework/Utility/src/main/java/utility/function/Dummy.java

@@ -42,6 +42,16 @@ public class Dummy {
 		};
 	}
 
+	/**
+	 * Creates a dummy consumer
+	 * @return a dummy consumer
+	 */
+	public static <T, U> BiConsumer<T, U> biConsumer() {
+		return (t, u) -> {
+			// no-op
+		};
+	}
+
 	/**
 	 * Creates a dummy function
 	 * @param <T> the input type
@@ -82,6 +92,17 @@ public class Dummy {
 		return c == null ? consumer() : c;
 	}
 
+	/**
+	 * Returns the given consumer object if it is not {@code null}.  Otherwise, a 
+	 * {@link #biConsumer()} is returned.  This is useful to avoid using {@code null}.
+	 *
+	 * @param c the consumer function to check for {@code null}
+	 * @return a non-null consumer
+	 */
+	public static <T, U> BiConsumer<T, U> ifNull(BiConsumer<T, U> c) {
+		return c == null ? biConsumer() : c;
+	}
+
 	/**
 	 * Returns the given callback object if it is not {@code null}.  Otherwise, a {@link #callback()}
 	 * is returned.  This is useful to avoid using {@code null}.