Added a new method to declare the header sources.

src/Generator/LibraryHelpers.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Globalization;
 using System.Text.RegularExpressions;
 using Cxxi.Generators;
@@ -31,6 +32,12 @@ namespace Cxxi
         /// <param name="passes"></param>
         void SetupPasses(PassBuilder passes);
 
+        /// <summary>
+        /// Setup your headers here.
+        /// </summary>
+        /// <param name="headers"></param>
+        void SetupHeaders(List<string> headers);
+
         /// <summary>
         /// Called to generate text at the start of the text template.
         /// </summary>
@@ -205,6 +212,13 @@ namespace Cxxi
                 @class.ExplicityIgnored = true;
         }
 
+        public void SetClassAsOpaque(string name)
+        {
+            var @class = FindClass(name);
+            if (@class != null)
+                @class.IsOpaque = true;
+        }
+
         #endregion
 
         #region Function Helpers