fix: Add UidUtils method

src/main/java/org/hisp/dhis/util/UidUtils.java

@@ -31,8 +31,10 @@
 import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
+import java.util.List;
 import java.util.concurrent.ThreadLocalRandom;
 import java.util.regex.Pattern;
+import java.util.stream.IntStream;
 import lombok.AccessLevel;
 import lombok.NoArgsConstructor;
 import org.apache.commons.lang3.StringUtils;
@@ -64,6 +66,16 @@ public static String generateUid() {
     return generateCode(UID_LENGTH);
   }
 
+  /**
+   * Generates the given number of DHIS2 UIDs.
+   *
+   * @param n the number of UIDs to generate.
+   * @return a list of DHIS2 UID strings.
+   */
+  public static List<String> generateUids(int n) {
+    return IntStream.range(0, n).mapToObj(i -> generateUid()).toList();
+  }
+
   /**
    * Tests whether the given code is a valid UID.
    *

src/test/java/org/hisp/dhis/util/UidUtilsTest.java

@@ -41,13 +41,18 @@
 @Tag(TestTags.UNIT)
 class UidUtilsTest {
   @Test
-  void testGetUid() {
+  void testGenerateUid() {
     String uid = UidUtils.generateUid();
 
     assertNotNull(uid);
     assertEquals(11, uid.length());
   }
 
+  @Test
+  void testGenerateUids() {
+    assertEquals(3, UidUtils.generateUids(3).size());
+  }
+
   @Test
   void testUidIsValid() {
     assertTrue(UidUtils.isValidUid("mq4jAnN6fg3"));