1.0 update usage question

Start with the GuestAddressTest example in the issue and review the ValidatorFactory setup and violation fields it exercises. Determine and document the supported 1.0 usage for inspecting constraint and field details, including the nullable properties and descriptor paths; the example should clearly show the expected assertions.

I'm updating to the 1.0 version of protovalidate-java, and there's a breaking change in how I consume the violations that I'm confused by.

Given this sample message:

message GuesAAddress {
  optional string zip_code = 1 [
    (buf.validate.field).required = true,
    (buf.validate.field).string.len = 5
  ];
}

I guessed at the changes I needed to make to unit test this.

 package common.guest.v1
 
-import build.buf.protovalidate.Validator
+import build.buf.protovalidate.ValidatorFactory
@@ -9,7 +9,7 @@ import org.junit.jupiter.api.Test
 
 class GuestAddressTest {
 
-    private val validator = Validator()
+    private val validator = ValidatorFactory.newBuilder().build()
 
     @Test
     fun `validate guest address - field wrong length`() {
@@ -24,8 +24,8 @@ class GuestAddressTest {
 
         result.violations.size shouldBe 1
         assertSoftly(result.violations[0]) {
-            constraintId shouldBe "string.len"
-            fieldPath shouldBe "zip_code"
+            fieldValue?.descriptor?.fullName shouldBe "common.guest.v1.GuestAddress.zip_code"
+            ruleValue?.descriptor?.fullName shouldBe "buf.validate.StringRules.len"
         }
     }
 }

Is what I did the expected usage change, or is there a cleaner way to inspect the fields? Them being nullable felt odd, and the path to get to those fields was not obvious to me.

Appreciate it - thanks.