diff --git a/internal/util-interface/src/main/java/xsbti/T2.java b/internal/util-interface/src/main/java/xsbti/T2.java
new file mode 100644
index 000000000..ee844d783
--- /dev/null
+++ b/internal/util-interface/src/main/java/xsbti/T2.java
@@ -0,0 +1,12 @@
+package xsbti;
+
+/** Used to pass a pair of values. */
+public class T2<A1, A2> {
+  public final A1 _1;
+  public final A2 _2;
+
+  public T2(A1 a1, A2 a2) {
+    this._1 = a1;
+    this._2 = a2;
+  }
+ }