code: public static Method[] methods(Class<?> clazz, String[] methodNames) {
          return Whitebox.getMethods(clazz, methodNames);
      }
docs: Get an array of {@link Method}'s that matches the supplied list of method
  names. Both instance and static methods are taken into account.
  
  @param clazz
  The class that should contain the methods.
  @param methodNames
  The names of the methods.
  @return An array of Method's. May be of length 0 but not
  {@code null}.
  @throws MethodNotFoundException
  If no method was found.