Add API endpoints for waiting for newly-linked devices

service/src/main/java/org/whispersystems/textsecuregcm/util/LinkDeviceToken.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2024 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+package org.whispersystems.textsecuregcm.util;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+public record LinkDeviceToken(
+    @Schema(description = """
+        An opaque token to send to a new linked device that authorizes the new device to link itself to the account that
+        requested this token.
+        """)
+    @JsonProperty("verificationCode") String token,
+
+    @Schema(description = """
+        An opaque identifier for the generated token that the caller may use to watch for a new device to complete the
+        linking process.
+        """)
+    String tokenIdentifier) {
+}

service/src/main/java/org/whispersystems/textsecuregcm/util/VerificationCode.java

@@ -1,8 +0,0 @@
-/*
- * Copyright 2013-2020 Signal Messenger, LLC
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-package org.whispersystems.textsecuregcm.util;
-
-public record VerificationCode(String verificationCode) {
-}