diff --git a/libraries-2/src/test/java/com/baeldung/freebuilder/EmployeeBuilderUnitTest.java b/libraries-2/src/test/java/com/baeldung/freebuilder/EmployeeBuilderUnitTest.java
index c73e2be8a6..fef60d9e7c 100644
--- a/libraries-2/src/test/java/com/baeldung/freebuilder/EmployeeBuilderUnitTest.java
+++ b/libraries-2/src/test/java/com/baeldung/freebuilder/EmployeeBuilderUnitTest.java
@@ -27,7 +27,16 @@ public class EmployeeBuilderUnitTest {
 
         Employee.Builder builder = new Employee.Builder();
 
-        Employee employee = builder.setName("baeldung").setAge(10).setDesignation("author").setEmail("abc@xyz.com").setSupervisorName("Admin").setPhoneNumber(4445566).setPermanent(true).setRole("developer").setAddress(address).build();
+        Employee employee = builder.setName("baeldung")
+          .setAge(10)
+          .setDesignation("author")
+          .setEmail("abc@xyz.com")
+          .setSupervisorName("Admin")
+          .setPhoneNumber(4445566)
+          .setPermanent(true)
+          .setRole("developer")
+          .setAddress(address)
+          .build();
 
         // then
         assertTrue(employee.getAddress().getCity().equalsIgnoreCase(CITY_NAME));
@@ -71,8 +80,17 @@ public class EmployeeBuilderUnitTest {
 
         Employee.Builder builder = new Employee.Builder();
 
-        Employee employee = builder.setName("baeldung").setAge(10).setDesignation("author").setEmail("abc@xyz.com").setSupervisorName("Admin").setPhoneNumber(4445566).setNullablePermanent(null).setDateOfJoining(Optional.empty()).setRole("developer")
-                .setAddress(address).build();
+        Employee employee = builder.setName("baeldung")
+          .setAge(10)
+          .setDesignation("author")
+          .setEmail("abc@xyz.com")
+          .setSupervisorName("Admin")
+          .setPhoneNumber(4445566)
+          .setNullablePermanent(null)
+          .setDateOfJoining(Optional.empty())
+          .setRole("developer")
+          .setAddress(address)
+          .build();
 
         // then
         assertFalse(employee.getDateOfJoining().isPresent());
@@ -88,8 +106,17 @@ public class EmployeeBuilderUnitTest {
 
         Employee.Builder builder = new Employee.Builder();
 
-        Employee employee = builder.setName("baeldung").setAge(10).setDesignation("author").setEmail("abc@xyz.com").setSupervisorName("Admin").setPhoneNumber(4445566).setNullablePermanent(null).setDateOfJoining(Optional.empty()).setRole("developer")
-                .setAddress(address).build();
+        Employee employee = builder.setName("baeldung")
+          .setAge(10)
+          .setDesignation("author")
+          .setEmail("abc@xyz.com")
+          .setSupervisorName("Admin")
+          .setPhoneNumber(4445566)
+          .setNullablePermanent(null)
+          .setDateOfJoining(Optional.empty())
+          .setRole("developer")
+          .setAddress(address)
+          .build();
 
         // then
         assertNull(employee.getCurrentProject());
@@ -105,8 +132,19 @@ public class EmployeeBuilderUnitTest {
 
         Employee.Builder builder = new Employee.Builder();
 
-        Employee employee = builder.setName("baeldung").setAge(10).setDesignation("author").setEmail("abc@xyz.com").setSupervisorName("Admin").setPhoneNumber(4445566).setNullablePermanent(null).setDateOfJoining(Optional.empty()).setRole("developer")
-                .addAccessTokens(1221819L).addAccessTokens(1223441L, 134567L).setAddress(address).build();
+        Employee employee = builder.setName("baeldung")
+          .setAge(10)
+          .setDesignation("author")
+          .setEmail("abc@xyz.com")
+          .setSupervisorName("Admin")
+          .setPhoneNumber(4445566)
+          .setNullablePermanent(null)
+          .setDateOfJoining(Optional.empty())
+          .setRole("developer")
+          .addAccessTokens(1221819L)
+          .addAccessTokens(1223441L, 134567L)
+          .setAddress(address)
+          .build();
 
         // then
         assertTrue(employee.getAccessTokens().size() == 3);
@@ -122,8 +160,20 @@ public class EmployeeBuilderUnitTest {
 
         Employee.Builder builder = new Employee.Builder();
 
-        Employee employee = builder.setName("baeldung").setAge(10).setDesignation("author").setEmail("abc@xyz.com").setSupervisorName("Admin").setPhoneNumber(4445566).setNullablePermanent(null).setDateOfJoining(Optional.empty()).setRole("developer")
-                .addAccessTokens(1221819L).addAccessTokens(1223441L, 134567L).putAssetsSerialIdMapping("Laptop", 12345L).setAddress(address).build();
+        Employee employee = builder.setName("baeldung")
+          .setAge(10)
+          .setDesignation("author")
+          .setEmail("abc@xyz.com")
+          .setSupervisorName("Admin")
+          .setPhoneNumber(4445566)
+          .setNullablePermanent(null)
+          .setDateOfJoining(Optional.empty())
+          .setRole("developer")
+          .addAccessTokens(1221819L)
+          .addAccessTokens(1223441L, 134567L)
+          .putAssetsSerialIdMapping("Laptop", 12345L)
+          .setAddress(address)
+          .build();
 
         // then
         assertTrue(employee.getAssetsSerialIdMapping().size() == 1);
@@ -139,8 +189,21 @@ public class EmployeeBuilderUnitTest {
 
         Employee.Builder builder = new Employee.Builder();
 
-        Employee employee = builder.setName("baeldung").setAge(10).setDesignation("author").setEmail("abc@xyz.com").setSupervisorName("Admin").setPhoneNumber(4445566).setNullablePermanent(null).setDateOfJoining(Optional.empty()).setRole("developer")
-                .addAccessTokens(1221819L).addAccessTokens(1223441L, 134567L).putAssetsSerialIdMapping("Laptop", 12345L).setAddress(address).mutateAddress(a -> a.setPinCode(112200)).build();
+        Employee employee = builder.setName("baeldung")
+          .setAge(10)
+          .setDesignation("author")
+          .setEmail("abc@xyz.com")
+          .setSupervisorName("Admin")
+          .setPhoneNumber(4445566)
+          .setNullablePermanent(null)
+          .setDateOfJoining(Optional.empty())
+          .setRole("developer")
+          .addAccessTokens(1221819L)
+          .addAccessTokens(1223441L, 134567L)
+          .putAssetsSerialIdMapping("Laptop", 12345L)
+          .setAddress(address)
+          .mutateAddress(a -> a.setPinCode(112200))
+          .build();
 
         // then
         assertTrue(employee.getAssetsSerialIdMapping().size() == 1);