docs: public void validatePublicVoid(boolean isStatic, List<Throwable> errors) {
          if (isStatic() != isStatic) {
              String state = isStatic ? "should" : "should not";
              errors.add(new Exception("Method " + method.getName() + "() " + state + " be static"));
          }
          if (!isPublic()) {
              errors.add(new Exception("Method " + method.getName() + "() should be public"));
          }
          if (method.getReturnType() != Void.TYPE) {
              errors.add(new Exception("Method " + method.getName() + "() should be void"));
          }
      }