Fixed build issue after updating the branch with the latest changes f…

…rom the branch `release/os/5.3`

libs/rest/generated-rest-client/src/test/kotlin/net/corda/restclient/generated/TestClientAuthHeader.kt

@@ -2,6 +2,8 @@ package net.corda.restclient.generated
 
 import io.javalin.Javalin
 import io.javalin.http.ContentType
+import io.javalin.http.Header
+import io.javalin.http.servlet.getBasicAuthCredentials
 import net.corda.restclient.CordaRestClient
 import net.corda.restclient.generated.infrastructure.ApiClient
 import org.assertj.core.api.AssertionsForClassTypes.assertThat
@@ -22,12 +24,12 @@ class TestClientAuthHeader {
             app = Javalin.create().start(0)
             app.get("api/v5_3/mgm/1234/info") { ctx ->
 
-                assertThat(ctx.basicAuthCredentialsExist()).isTrue()
+                val basicAuthCredentials = getBasicAuthCredentials(ctx.header(Header.AUTHORIZATION))
+                assertThat(basicAuthCredentials).isNotNull()
 
                 // Respond with the credentials from the basic auth header
-                val (user, password) = ctx.basicAuthCredentials()
                 ctx.contentType(ContentType.APPLICATION_JSON)
-                    .result("$user:$password")
+                    .result("${basicAuthCredentials?.username}:${basicAuthCredentials?.password}")
             }
         }