From 387949027b99390282257f74b1900e16300c4486 Mon Sep 17 00:00:00 2001
From: Patrick Koenig <pkoenig10@gmail.com>
Date: Fri, 22 Mar 2024 12:48:26 -0400
Subject: [PATCH] Add TypeMarker static factory method

---
 .../conjure/java/undertow/lib/TypeMarker.java     | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/conjure-undertow-lib/src/main/java/com/palantir/conjure/java/undertow/lib/TypeMarker.java b/conjure-undertow-lib/src/main/java/com/palantir/conjure/java/undertow/lib/TypeMarker.java
index 0ce892bde..e9ebc3f37 100644
--- a/conjure-undertow-lib/src/main/java/com/palantir/conjure/java/undertow/lib/TypeMarker.java
+++ b/conjure-undertow-lib/src/main/java/com/palantir/conjure/java/undertow/lib/TypeMarker.java
@@ -42,11 +42,24 @@ protected TypeMarker() {
                 genericSuperclass instanceof ParameterizedType,
                 "Class is not parameterized",
                 SafeArg.of("class", genericSuperclass));
-        type = ((ParameterizedType) genericSuperclass).getActualTypeArguments()[0];
+        Type typeArgument = ((ParameterizedType) genericSuperclass).getActualTypeArguments()[0];
+        Preconditions.checkArgument(
+                !(typeArgument instanceof TypeVariable),
+                "TypeMarker does not support variable types",
+                SafeArg.of("typeVariable", typeArgument));
+        this.type = typeArgument;
+    }
+
+    private TypeMarker(Type type) {
         Preconditions.checkArgument(
                 !(type instanceof TypeVariable),
                 "TypeMarker does not support variable types",
                 SafeArg.of("typeVariable", type));
+        this.type = type;
+    }
+
+    public static <T> TypeMarker<T> of(Type type) {
+        return new TypeMarker<>(type) {};
     }
 
     public final Type getType() {