add default values

Author: anotherdev

firebase-auth-rest/core/src/main/java/com/anotherdev/firebase/auth/UserInfo.java

@@ -6,25 +6,34 @@
 import org.immutables.value.Value;
 
 @Value.Immutable
-@Value.Style(
-        strictBuilder = true,
-        visibility = Value.Style.ImplementationVisibility.PACKAGE
-)
+@Value.Style(strictBuilder = true)
 @Gson.TypeAdapters
 public interface UserInfo {
 
+    @SerializedName("rawId")
+    String getUid();
+
+    @Value.Default
     @SerializedName("displayName")
-    String getDisplayName();
+    default String getDisplayName() {
+        return "";
+    }
 
+    @Value.Default
     @SerializedName("email")
-    String getEmail();
+    default String getEmail() {
+        return "";
+    }
 
+    @Value.Default
     @SerializedName("photoUrl")
-    String getPhotoUrl();
+    default String getPhotoUrl() {
+        return "";
+    }
 
+    @Value.Default
     @SerializedName("providerId")
-    String getProviderId();
-
-    @SerializedName("rawId")
-    String getUid();
+    default String getProviderId() {
+        return "";
+    }
 }