Added #region markers for type and decl AST visitors.

src/Bridge/ASTVisitor.cs

@@ -27,6 +27,8 @@ namespace Cxxi
             return  !visited.Add(decl);
         }
 
+        #region Type Visitors
+
         public virtual bool VisitTagType(TagType tag, TypeQualifiers quals)
         {
             return tag.Declaration.Visit(this);
@@ -76,6 +78,10 @@ namespace Cxxi
             return template.Template.Visit(this);
         }
 
+        #endregion
+
+        #region Decl Visitors
+
         public virtual bool VisitDeclaration(Declaration decl, TypeQualifiers quals)
         {
             return VisitDeclaration(decl);
@@ -146,5 +152,7 @@ namespace Cxxi
         {
             return true;
         }
+
+        #endregion
     }
 }