docs: public static Matcher<MethodTree> constructorOfClass(final String className) {
      return new Matcher<MethodTree>() {
        @Override
        public boolean matches(MethodTree methodTree, VisitorState state) {
          Symbol symbol = ASTHelpers.getSymbol(methodTree);
          return symbol.getEnclosingElement().getQualifiedName().contentEquals(className)
              && symbol.isConstructor();
        }
      };
    }