Convert fallback config to String

Author: chillaq

client/src/main/java/io/split/client/SplitClientImpl.java

@@ -548,7 +548,7 @@ private SplitResult checkFallbackTreatment(String featureName) {
         FallbackTreatment fallbackTreatment = _fallbackTreatmentCalculator.resolve(featureName, "");
         String config = null;
         if (fallbackTreatment.getConfig() != null) {
-            config = fallbackTreatment.getConfig().toString();
+            config = fallbackTreatment.getConfig();
         }
         return new SplitResult(fallbackTreatment.getTreatment(), config);
     }

client/src/main/java/io/split/client/dtos/FallbackTreatment.java

@@ -1,13 +1,11 @@
 package io.split.client.dtos;
 
-import java.util.Map;
-
 public class FallbackTreatment {
-    private final Map<String, Object> _config;
+    private final String _config;
     private final String _treatment;
     private final String _label;
 
-    public FallbackTreatment(String treatment, Map<String, Object> config) {
+    public FallbackTreatment(String treatment, String config) {
         _treatment = treatment;
         _config = config;
         _label = null;
@@ -19,13 +17,13 @@ public FallbackTreatment(String treatment) {
         _label = null;
     }
 
-    public FallbackTreatment(String treatment, Map<String, Object> config, String label) {
+    public FallbackTreatment(String treatment, String config, String label) {
         _treatment = treatment;
         _config = config;
         _label = label;
     }
 
-    public Map<String, Object> getConfig() {
+    public String getConfig() {
         return _config;
     }
 

client/src/main/java/io/split/engine/evaluator/EvaluatorImp.java

@@ -197,7 +197,7 @@ private String getConfig(ParsedSplit parsedSplit, String returnedTreatment) {
 
     private String getFallbackConfig(FallbackTreatment fallbackTreatment) {
         if (fallbackTreatment.getConfig() != null) {
-            return fallbackTreatment.getConfig().toString();
+            return fallbackTreatment.getConfig();
         }
 
         return null;
@@ -206,7 +206,6 @@ private String getFallbackConfig(FallbackTreatment fallbackTreatment) {
     private TreatmentLabelAndChangeNumber evaluateParsedSplit(String matchingKey, String bucketingKey, Map<String, Object> attributes,
                                                               ParsedSplit parsedSplit, String featureName) {
         try {
-
             if (parsedSplit == null) {
                 FallbackTreatment fallbackTreatment = _fallbackTreatmentCalculator.resolve(featureName, Labels.DEFINITION_NOT_FOUND);
                 return new TreatmentLabelAndChangeNumber(fallbackTreatment.getTreatment(),