Microsoft.R.Editor.Tree.EditorTree.FireOnNodesRemoved C# (CSharp) Method

        internal void FireOnNodesRemoved(IReadOnlyCollection<IAstNode> nodes) {
            if (_ownerThread != Thread.CurrentThread.ManagedThreadId) {
                Debug.Fail(_threadContextInvalidMessage);
                return;
            }

            try {
                // Don't bother if list is empty
                if (nodes.Count > 0) {
                    NodesRemoved?.Invoke(this, new TreeNodesRemovedEventArgs(nodes));
                }
            } catch (Exception ex) {
                Debug.Assert(false, Invariant($"Exception thrown in a tree.NodesRemoved event handler: {ex.Message}"));
            }
        }