utils/reflector/src/main/java/org/robolectric/util/reflector/Reflector.java
public static <T> T reflector(Class<T> iClass, Object target) {
    Class<?> targetClass = determineTargetClass(iClass);

    Constructor<? extends T> ctor = (Constructor<? extends T>) CACHE.get(iClass);
    try {
      if (ctor == null) {
        Class<? extends T> reflectorClass = createReflectorClass(iClass, targetClass);
        ctor = reflectorClass.getConstructor(targetClass);
        ctor.setAccessible(true);
      }

      CACHE.put(iClass, ctor);

      return ctor.newInstance(target);
    } catch (NoSuchMethodException
        | InstantiationException
        | IllegalAccessException
        | InvocationTargetException e) {
      throw new IllegalStateException(e);
    }
  }
public static <T> T reflector(Class<T> iClass, Object target) {
    Class<?> targetClass = determineTargetClass(iClass);

    Constructor<? extends T> ctor = (Constructor<? extends T>) CACHE.get(iClass);
    try {
      if (ctor == null) {
        Class<? extends T> reflectorClass = createReflectorClass(iClass, targetClass);
        ctor = reflectorClass.getConstructor(targetClass);
        ctor.setAccessible(true);
      }

      CACHE.put(iClass, ctor);

      return ctor.newInstance(target);
    } catch (NoSuchMethodException
        | InstantiationException
        | IllegalAccessException
        | InvocationTargetException e) {
      throw new IllegalStateException(e);
    }
  }
public static < T > T reflector ( Class < T > iClass , Object target ) { Class < ? > targetClass = determineTargetClass ( iClass ) ; Constructor < ? extends T > ctor = ( Constructor < ? extends T > ) CACHE . get ( iClass ) ; try { if ( ctor == null ) { Class < ? extends T > reflectorClass = createReflectorClass ( iClass , targetClass ) ; ctor = reflectorClass . getConstructor ( targetClass ) ; ctor . setAccessible ( true ) ; } CACHE . put ( iClass , ctor ) ; return ctor . newInstance ( target ) ; } catch ( NoSuchMethodException | InstantiationException | IllegalAccessException | InvocationTargetException e ) { throw new IllegalStateException ( e ) ; } }
Returns an object which provides accessors for invoking otherwise inaccessible methods and
fields.

@param iClass an interface with methods matching private methods on the target
@param target the target object
Returns an object which provides accessors for invoking otherwise inaccessible methods and fields .