style: resolve style guide violations

Author: alfonsobries

src/main/java/org/arkecosystem/crypto/transactions/types/UsernameRegistration.java

@@ -31,9 +31,9 @@ public byte[] serialize() {
         byte[] username = this.asset.username.getBytes();
 
         ByteBuffer buffer = ByteBuffer.allocate(username.length + 1);
-        
+
         buffer.order(ByteOrder.LITTLE_ENDIAN);
-        
+
         buffer.put((byte) username.length);
         buffer.put(username);
 
@@ -43,10 +43,10 @@ public byte[] serialize() {
     @Override
     public void deserialize(ByteBuffer buffer) {
         int usernameLength = buffer.get() & 0xff;
-        
+
         byte[] username = new byte[usernameLength];
         buffer.get(username);
-        
+
         String utf8Username = new String(username);
         this.asset.username = utf8Username;
     }

src/test/java/org/arkecosystem/crypto/transactions/builder/UsernameRegistrationBuilderTest.java

@@ -11,8 +11,7 @@ class UsernameRegistrationBuilderTest {
     void build() {
         Transaction actual =
                 new UsernameRegistrationBuilder()
-                        .usernameAsset(
-                                "alfonsobries")
+                        .usernameAsset("alfonsobries")
                         .nonce(3)
                         .sign("this is a top secret passphrase")
                         .transaction;
@@ -21,9 +20,7 @@ void build() {
 
         HashMap asset = (HashMap) actualHashMap.get("asset");
 
-        assertEquals(
-                asset.get("username"),
-                "alfonsobries");
+        assertEquals(asset.get("username"), "alfonsobries");
 
         assertTrue(actual.verify());
     }

src/test/java/org/arkecosystem/crypto/transactions/deserializers/UsernameRegistrationTest.java

@@ -14,8 +14,7 @@ public class UsernameRegistrationTest {
     @Test
     void passphrase() {
         LinkedTreeMap<String, Object> fixture =
-                FixtureLoader.load(
-                        "transactions/username_registration/username-registration-sign");
+                FixtureLoader.load("transactions/username_registration/username-registration-sign");
 
         LinkedTreeMap<String, Object> data = (LinkedTreeMap<String, Object>) fixture.get("data");
 

src/test/java/org/arkecosystem/crypto/transactions/serializers/UsernameRegistrationTest.java

@@ -14,8 +14,7 @@ class UsernameRegistrationTest {
     @Test
     void passphrase() {
         LinkedTreeMap<String, Object> fixture =
-                FixtureLoader.load(
-                        "transactions/username_registration/username-registration-sign");
+                FixtureLoader.load("transactions/username_registration/username-registration-sign");
         Transaction transaction =
                 new Deserializer(fixture.get("serialized").toString()).deserialize();