code: public ModifierAdjustment withConstructorModifiers(ElementMatcher<? super MethodDescription> matcher,
                                                         List<? extends ModifierContributor.ForMethod> modifierContributors) {
          return withInvokableModifiers(isConstructor().and(matcher), modifierContributors);
      }
docs: Adjusts a constructor's modifiers if it fulfills the supplied matcher.
  
  @param matcher              The matcher that determines if a constructor's modifiers should be adjusted.
  @param modifierContributors The modifier contributors to enforce.
  @return A new modifier adjustment that enforces the given modifier contributors and any previous adjustments.