Support method calls on instances

libs/UIX.DecompXml/Mock/IrisExpression.cs

@@ -8,7 +8,7 @@ internal class IrisExpression : Expression
 {
     public virtual string Decompile(DecompileContext context) => ToString();
 
-    public static Expression ToExpression(object p)
+    public static Expression Wrap(object p)
     {
         return p switch
         {
@@ -16,7 +16,14 @@ internal class IrisExpression : Expression
             Expression expr => expr,
             Disassembler.RawConstantInfo constantInfo => new IrisConstantExpression(constantInfo.Value, constantInfo.Type),
 
-            _ => throw new NotImplementedException()
+            _ => throw new NotImplementedException($"Unable to wrap '{p}' in an expression")
         };
     }
+
+    public static string Decompile(Expression expr, DecompileContext context)
+    {
+        return expr is IrisExpression irisExpr
+            ? irisExpr.Decompile(context)
+            : expr.ToString();
+    }
 }