SpineEventEngine · alexander-yevsyukov · Jan 20, 2026 · Jan 20, 2026 · Jan 20, 2026 · Jan 20, 2026
diff --git a/buildSrc/src/main/kotlin/io/spine/dependency/local/CoreJvmCompiler.kt b/buildSrc/src/main/kotlin/io/spine/dependency/local/CoreJvmCompiler.kt
@@ -46,12 +46,12 @@ object CoreJvmCompiler {
     /**
      * The version used to in the build classpath.
      */
-    const val dogfoodingVersion = "2.0.0-SNAPSHOT.050"
+    const val dogfoodingVersion = "2.0.0-SNAPSHOT.051"
 
     /**
      * The version to be used for integration tests.
      */
-    const val version = "2.0.0-SNAPSHOT.050"
+    const val version = "2.0.0-SNAPSHOT.051"
 
     /**
      * The ID of the Gradle plugin.

diff --git a/buildSrc/src/main/kotlin/io/spine/dependency/local/Validation.kt b/buildSrc/src/main/kotlin/io/spine/dependency/local/Validation.kt
@@ -36,7 +36,7 @@ object Validation {
     /**
      * The version of the Validation library artifacts.
      */
-    const val version = "2.0.0-SNAPSHOT.392"
+    const val version = "2.0.0-SNAPSHOT.393"
 
     /**
      * The last version of Validation compatible with ProtoData.

diff --git a/config b/config
diff --git a/dependencies.md b/dependencies.md
@@ -1,6 +1,6 @@
 
 
-# Dependencies of `io.spine.tools:validation-context:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-context:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.fasterxml.jackson. **Name** : jackson-bom. **Version** : 2.20.0.
@@ -1139,14 +1139,14 @@
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:52 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-context-tests:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-context-tests:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.fasterxml.jackson. **Name** : jackson-bom. **Version** : 2.20.0.
@@ -1731,14 +1731,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:51 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-gradle-plugin:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-gradle-plugin:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.fasterxml.jackson. **Name** : jackson-bom. **Version** : 2.20.0.
@@ -2807,14 +2807,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:52 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-java:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-java:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.fasterxml.jackson. **Name** : jackson-bom. **Version** : 2.20.0.
@@ -3901,14 +3901,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:52 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-java-bundle:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-java-bundle:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.google.auto.service. **Name** : auto-service-annotations. **Version** : 1.1.1.
@@ -3971,14 +3971,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:51 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:validation-jvm-runtime:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine:validation-jvm-runtime:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -4811,14 +4811,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:52 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-ksp:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-ksp:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.google.auto.service. **Name** : auto-service-annotations. **Version** : 1.1.1.
@@ -5747,14 +5747,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:52 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-consumer:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-consumer:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.fasterxml.jackson. **Name** : jackson-bom. **Version** : 2.20.0.
@@ -6345,14 +6345,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:51 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-consumer-dependency:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-consumer-dependency:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -6863,14 +6863,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:52 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-extensions:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-extensions:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.fasterxml.jackson. **Name** : jackson-bom. **Version** : 2.20.0.
@@ -7554,14 +7554,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:52 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-runtime:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-runtime:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -8183,14 +8183,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:52 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-validating:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-validating:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -8855,14 +8855,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:52 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-validator:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-validator:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.fasterxml.jackson. **Name** : jackson-bom. **Version** : 2.20.0.
@@ -9613,14 +9613,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:52 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-validator-dependency:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-validator-dependency:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -9890,14 +9890,14 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:51 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:validation-vanilla:2.0.0-SNAPSHOT.393`
+# Dependencies of `io.spine.tools:validation-vanilla:2.0.0-SNAPSHOT.394`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -10248,6 +10248,6 @@ This report was generated on **Tue Jan 20 16:21:00 WET 2026** using
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Tue Jan 20 16:21:00 WET 2026** using 
+This report was generated on **Tue Jan 20 19:55:51 WET 2026** using 
 [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under 
 [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
diff --git a/docs/00-intro/index.md b/docs/00-intro/index.md
@@ -3,8 +3,7 @@
 Spine Validation is a Protobuf-centric validation framework that generates
 type-safe validation code directly from your `.proto` definitions.  
 It allows you to describe constraints on fields, messages, and collections using
-declarative options and then automatically enforces these constraints at
-runtime.
+declarative options and then automatically enforces these constraints at runtime.
 
 The library is part of the Spine toolchain but can also be used independently
 in any Java/Kotlin backend that models data using Protocol Buffers.

diff --git a/docs/01-getting-started/index.md b/docs/01-getting-started/index.md
@@ -1,6 +1,7 @@
 # Getting Started
 
-This section helps you set up Spine Validation, define your first validated Protobuf model, and see validation in action in Java and Kotlin.
+This section helps you set up Spine Validation, define your first validated Protobuf model,
+and see validation in action in Java and Kotlin.
 
 If you are new to the library, read the short overview first:
 - Introduction → [Overview](../00-intro/index.md)
@@ -22,7 +23,9 @@ If you are new to the library, read the short overview first:
 - Protobuf compiler (`protoc`)
 - Optional: Kotlin 2.2.20+ for the Kotlin Protobuf DSL
 
-If your project already generates Java/Kotlin sources from `.proto` files, you’re 90% there. Spine Validation integrates into the build to generate and inject validation logic into the code produced by `protoc`.
+If your project already generates Java/Kotlin sources from `.proto` files, you’re 90% there.
+Spine Validation integrates into the build to generate and inject validation logic into
+the code produced by `protoc`.
 
 ---
 

diff --git a/docs/ToC.md b/docs/ToC.md
@@ -84,13 +84,8 @@
 - [Cross-field Logic](07-recipes/cross-field-logic.md)
 - [API Validation](07-recipes/api-validation.md)
 
-## 8. Migration Guide
-- [Overview](08-migration/index.md)
-- [Migrating from `spine.base` Validation](08-migration/from-spine-base.md)
-- [Version Changes](08-migration/version-changes.md)
-
-## 9. Reference
-- [Reference Overview](09-reference/index.md)
-- [List of Validation Options](09-reference/options.md)
-- [Java/Kotlin API Index](09-reference/api.md)
-- [Glossary](09-reference/glossary.md)
+## 8. Reference
+- [Reference Overview](08-reference/index.md)
+- [List of Validation Options](08-reference/options.md)
+- [Java/Kotlin API Index](08-reference/api.md)
+- [Glossary](08-reference/glossary.md)
diff --git a/java/src/main/kotlin/io/spine/tools/validation/java/JavaValidationPlugin.kt b/java/src/main/kotlin/io/spine/tools/validation/java/JavaValidationPlugin.kt
@@ -71,9 +71,9 @@ private val customOptions: List<ValidationOption> by lazy {
  * Dynamically discovered instances of custom
  * [MessageValidator][io.spine.validation.MessageValidator]s.
  *
- * Please note that the KSP module is responsible for the actual discovering
- * of the message validators. The discovered validators are written to a text file
- * in the KSP task output. This property loads the validators from that file.
+ * Note that the KSP module is responsible for the actual discovering of the message validators.
+ * The discovered validators are written to a text file in the KSP task output.
+ * This property loads the validators from that file.
  */
 private val customValidators: Map<MessageClass, ValidatorClass> by lazy {
     val workingDir = System.getProperty("user.dir")

diff --git a/java/src/main/kotlin/io/spine/tools/validation/java/setonce/SetOnceBytesField.kt b/java/src/main/kotlin/io/spine/tools/validation/java/setonce/SetOnceBytesField.kt
@@ -38,8 +38,7 @@ import io.spine.tools.psi.java.method
 /**
  * Renders Java code to support `(set_once)` option for the given byte array [field].
  *
- * Please note, in the generated Java code, Protobuf uses [ByteString] to represent
- * an array of bytes.
+ * Note that Protobuf uses [ByteString] to represent an array of bytes in the generated code.
  *
  * @param field The byte array field that declared the option.
  * @param typeSystem The type system to resolve types.

diff --git a/java/src/main/kotlin/io/spine/tools/validation/java/setonce/SetOnceEnumField.kt b/java/src/main/kotlin/io/spine/tools/validation/java/setonce/SetOnceEnumField.kt
@@ -39,8 +39,7 @@ import io.spine.tools.psi.java.method
 /**
  * Renders Java code to support `(set_once)` option for the given enum [field].
  *
- * Please note, in the generated Java code, Protobuf uses an ordinal number
- * to represent the currently set enum constant.
+ * Note that code generated by Protobuf uses an ordinal number to represent the currently set enum constant.
  *
  * @param field The enum field that declared the option.
  * @param typeSystem The type system to resolve types.

diff --git a/jvm-runtime/src/main/kotlin/io/spine/validation/MessageValidator.kt b/jvm-runtime/src/main/kotlin/io/spine/validation/MessageValidator.kt
@@ -82,7 +82,7 @@ import io.spine.annotation.SPI
  * }
  * ```
  *
- * Please note that standalone instances of [M] and fields of [M] type that occur in
+ * Note that standalone instances of [M] and fields of [M] type that occur in
  * other external messages **will not be validated**.
  *
  * Consider the following example:
+1 −1		buildSrc/src/main/kotlin/io/spine/dependency/local/BaseTypes.kt
+2 −2		buildSrc/src/main/kotlin/io/spine/dependency/local/Compiler.kt
+1 −1		buildSrc/src/main/kotlin/io/spine/dependency/local/CoreJvm.kt
+1 −1		buildSrc/src/main/kotlin/io/spine/dependency/local/Time.kt
+1 −1		buildSrc/src/main/kotlin/io/spine/dependency/local/Validation.kt
+1 −1		gradle.properties
+ −		gradle/wrapper/gradle-wrapper.jar
+1 −1		gradle/wrapper/gradle-wrapper.properties