StoryTeller.Model.Paragraph.AddChild C# (CSharp) Method

        public void AddChild(GrammarModel grammar)
        {
            var newGrammars = new[] {grammar};
            if (children == null || children.Length == 0)
                children = newGrammars;
            else
                children = children.Concat(newGrammars).ToArray();
        }

        public override GrammarModel ApplyOverrides(GrammarModel grammar)
        {
            var @override = grammar as Paragraph;

            if (@override == null)
            {
                return(this);
            }


            var newParagraph = new Paragraph
            {
                key = key
            };

            if (@override.title.IsNotEmpty() && @override.title != key)
            {
                newParagraph.title = @override.title;
            }


            if (@override.children == null || @override.children.Length == 0)
            {
                newParagraph.children = children;
            }
            else
            {
                var nonSilentIndex = 0;

                foreach (var child in children)
                {
                    if (child is Silent)
                    {
                        newParagraph.AddChild(child);
                    }
                    else
                    {
                        if (@override.children.Length > nonSilentIndex)
                        {
                            var overridenChild = @override.children[nonSilentIndex++];
                            newParagraph.AddChild(child.ApplyOverrides(overridenChild));
                        }
                        else
                        {
                            newParagraph.AddChild(child);
                        }
                    }
                }
            }

            return(newParagraph);
        }