public static Constructor<?> findConstructorExact(Class<?> clazz, Class<?>... parameterTypes) {
        String fullConstructorName = clazz.getName() + getParametersString(parameterTypes) + "#exact";

        if (constructorCache.containsKey(fullConstructorName)) {
            Constructor<?> constructor = constructorCache.get(fullConstructorName);
            if (constructor == null)
                throw new NoSuchMethodError(fullConstructorName);
            return constructor;
        }

        try {
            Constructor<?> constructor = clazz.getDeclaredConstructor(parameterTypes);
            constructor.setAccessible(true);
            constructorCache.put(fullConstructorName, constructor);
            return constructor;
        } catch (NoSuchMethodException e) {
            constructorCache.put(fullConstructorName, null);
            throw new NoSuchMethodError(fullConstructorName);
        }
    }
Look up a constructor of a class and set it to accessible.
See {@link #findMethodExact(String, ClassLoader, String, Object...)} for details.
android/android_framework/base/src/main/java/util/XposedHelpers.java