docs: byte[] transform(Class<?> classBeingRedefined, byte[] classfileBuffer) throws
              IllegalClassFormatException {
          if (classBeingRedefined == null
                  || !mockedTypes.contains(classBeingRedefined)) {
              return null;
          } else {
              try {
                  return nativeRedefine(identifier, classfileBuffer);
              } catch (Throwable throwable) {
                  throw new IllegalClassFormatException();
              }
          }
      }