Remove extra empty lines

Author: yevhenii-nadtochii

java-tests/validation-gen/src/test/kotlin/io/spine/test/tools/validate/setonce/SetOnceFieldsTest.kt

@@ -415,11 +415,9 @@ internal class SetOnceFieldsTest {
     /**
      * Tests `(set_once)` constraint when the option is applied to a boolean field.
      *
-     *
      * Please note, for boolean fields, there are no `byMessageMerge`
      * and `byBytesMerge` tests.
      *
-     *
      * It is impossible to override a non-default value by another non-default value
      * for a boolean field. In Protobuf v3, boolean has only one non-default value: `true`.
      * When we try to override `true` with `false` by merging, the merge method does

java-tests/validation-gen/src/test/kotlin/io/spine/test/tools/validate/setonce/SetOnceTestEnv.kt

@@ -28,29 +28,24 @@ package io.spine.test.tools.validate.setonce
 import com.google.protobuf.ByteString
 import io.spine.test.tools.validate.Name
 import io.spine.test.tools.validate.YearOfStudy
+import io.spine.test.tools.validate.name
 
 /**
  * Test environment for `(set_once)` option.
  *
- *
  * This class declares two distinct constants for each Java field type.
  * Tests use them to verify whether a field with a non-default value can be
  * overridden by another non-default value.
  *
- *
  * Although Protobuf has 10 integer types, in Java, all 32bit numbers are
  * mapped to `int`, and all 64bit numbers are mapped to `long`.
  */
 internal object SetOnceTestEnv {
     const val STUDENT1: String = "student-1"
     const val STUDENT2: String = "student-2"
 
-    val JACK: Name = Name.newBuilder()
-        .setValue("Jack")
-        .build()
-    val DONALD: Name = Name.newBuilder()
-        .setValue("Donald")
-        .build()
+    val JACK: Name = name { value = "Jack" }
+    val DONALD: Name = name { value = "Donald" }
 
     const val METER_AND_HALF: Double = 1.55
     const val METER_AND_EIGHT: Double = 1.88