Added final AST support for methods and classes.

Conversion of Clang C++ AST state and update of C# generator to come at a later date.

src/AST/Class.cs

@@ -93,6 +93,9 @@ namespace CppSharp.AST
         // True if the type is to be treated as a union.
         public bool IsUnion;
 
+        // True if the class is final / sealed.
+        public bool IsFinal { get; set; }
+
         // True if the type is to be treated as opaque.
         public bool IsOpaque;
 
@@ -123,6 +126,7 @@ namespace CppSharp.AST
             Specifiers = new List<AccessSpecifierDecl>();
             IsAbstract = false;
             IsUnion = false;
+            IsFinal = false;
             IsOpaque = false;
             IsPOD = false;
             Type = ClassType.RefType;

src/AST/Method.cs

@@ -93,6 +93,7 @@ namespace CppSharp.AST
             IsVirtual = method.IsVirtual;
             IsConst = method.IsConst;
             IsOverride = method.IsOverride;
+            IsFinal = method.IsFinal;
             IsProxy = method.IsProxy;
             IsStatic = method.IsStatic;
             Kind = method.Kind;
@@ -115,6 +116,10 @@ namespace CppSharp.AST
         public bool IsConst { get; set; }
         public bool IsExplicit { get; set; }
         public bool IsOverride { get; set; }
+
+         // True if the method is final / sealed.
+        public bool IsFinal { get; set; }
+
         public bool IsProxy { get; set; }
 
         public RefQualifier RefQualifier { get; set; }