Fix #3399: Add module filename as ToolTip of AnalyzerEntityTreeNode

ILSpy/Analyzers/AnalyzerEntityTreeNode.cs

@@ -22,8 +22,8 @@ using System.Windows;
 using ICSharpCode.Decompiler.TypeSystem;
 using ICSharpCode.ILSpy.TreeNodes;
 using ICSharpCode.ILSpyX;
-using ICSharpCode.ILSpyX.TreeView.PlatformAbstractions;
 using ICSharpCode.ILSpyX.TreeView;
+using ICSharpCode.ILSpyX.TreeView.PlatformAbstractions;
 
 namespace ICSharpCode.ILSpy.Analyzers
 {
@@ -46,6 +46,8 @@ namespace ICSharpCode.ILSpy.Analyzers
 			MessageBus.Send(this, new NavigateToReferenceEventArgs(new EntityReference(this.Member.ParentModule?.MetadataFile, this.Member.MetadataToken)));
 		}
 
+		public override object ToolTip => Member.ParentModule?.MetadataFile?.FileName;
+
 		public override bool HandleAssemblyListChanged(ICollection<LoadedAssembly> removedAssemblies, ICollection<LoadedAssembly> addedAssemblies)
 		{
 			foreach (LoadedAssembly asm in removedAssemblies)