Extend javadoc.

byte-buddy-dep/src/main/java/net/bytebuddy/dynamic/loading/ClassLoadingStrategy.java

@@ -463,7 +463,10 @@ public static ClassLoadingStrategy<ClassLoader> of(Object lookup) {
         /**
          * Resolves a class loading strategy using a lookup if available on the current JVM. If the current JVM supports method handles
          * lookups, a lookup instance will be used. Alternatively, unsafe class definition is used, if supported. If neither strategy is
-         * supported, an exception is thrown.
+         * supported, an exception is thrown. A common use case would be calling this method as in
+         * {@code ClassLoadingStrategy.UsingLookup.withFallback(MethodHandles::lookup)}. Note that the invocation of
+         * {@code MethodHandles.lookup()} is call site sensitive such that it cannot be invoked within Byte Buddy what requires this
+         * external invocation.
          *
          * @param lookup A resolver for a lookup instance if the current JVM allows for lookup-based class injection.
          * @return An appropriate class loading strategy for the current JVM that uses a method handles lookup if available.