Partial Type
src/Workspaces/SharedUtilitiesAndExtensions/Compiler/Core/Collections/IntervalTreeHelpers.cs
src/Workspaces/SharedUtilitiesAndExtensions/Compiler/Core/Collections/IntervalTreeHelpers.Enumerator.cs
src/Workspaces/SharedUtilitiesAndExtensions/Compiler/Core/Collections/IntervalTreeHelpers.NodeEnumerator.cs