Renamed methods to make more clear what they are used for

java/com.sap.sailing.server/src/com/sap/sailing/server/impl/GenericJSONPreferenceConverter.java

@@ -16,12 +16,12 @@ public class GenericJSONPreferenceConverter<PREF extends GenericSerializableSett
     }
 
     @Override
-    public String toString(PREF preference) {
+    public String toPreferenceString(PREF preference) {
         return serializer.serializeToString(preference);
     }
 
     @Override
-    public PREF toPreference(String stringPreference) {
+    public PREF toPreferenceObject(String stringPreference) {
         return serializer.deserialize(emptyInstanceFactory.get(), stringPreference);
     }
 

java/com.sap.sse.security.test/src/com/sap/sse/security/test/JavaIoSerializablePreferenceConverter.java

@@ -11,7 +11,7 @@ import com.sap.sse.security.PreferenceConverter;
 
 public class JavaIoSerializablePreferenceConverter<T> implements PreferenceConverter<T> {
     @Override
-    public String toString(T preference) {
+    public String toPreferenceString(T preference) {
         try {
             ByteArrayOutputStream stream = new ByteArrayOutputStream();
             ObjectOutputStream oos = new ObjectOutputStream(stream);
@@ -25,7 +25,7 @@ public class JavaIoSerializablePreferenceConverter<T> implements PreferenceConve
 
     @SuppressWarnings("unchecked")
     @Override
-    public T toPreference(String stringPreference) {
+    public T toPreferenceObject(String stringPreference) {
         try {
             return (T) new ObjectInputStream(new ByteArrayInputStream(Base64.getDecoder().decode(stringPreference)))
                     .readObject();

java/com.sap.sse.security/src/com/sap/sse/security/PreferenceConverter.java

@@ -7,7 +7,7 @@ package com.sap.sse.security;
  * @param <PREF> The type of preference object, this converter handles.
  */
 public interface PreferenceConverter<PREF> {
-    String toString(PREF preference);
+    String toPreferenceString(PREF preference);
 
-    PREF toPreference(String stringPreference);
+    PREF toPreferenceObject(String stringPreference);
 }