Fixed add method in GxProperties, it must add the item at the end of de vector even if it already exists in the list. Unify behavior with .net.

Added new method values to get a string with all the values.
Issue 74868

Author: claudiamurialdo

common/src/main/java/com/genexus/util/GXProperties.java

@@ -26,7 +26,7 @@ public void set(String name, String value)
 
   public void add(String name, String value)
   {
-	  put(name, value);
+	  addToTheEnd(name, value);
   }
 
   public void put(String name, String value)
@@ -38,13 +38,23 @@ public void put(String name, String value)
 	  }
 	  else
 	  {
-		GXProperty prop = new GXProperty();
-		prop.setKey(name);
-		prop.setValue(value);
-		vector.addElement(prop);
+		  addToTheEnd(name, value);
 	  }
   }
-  
+  public String values() {
+	  StringBuilder builder = new StringBuilder();
+	  for (Object property : vector) {
+		  builder.append(((GXProperty) property).getValue());
+	  }
+	  return builder.toString();
+  }
+  private void addToTheEnd(String name, String value){
+
+	  GXProperty prop = new GXProperty();
+	  prop.setKey(name);
+	  prop.setValue(value);
+	  vector.addElement(prop);
+  }
   public String get(String name)
   {
 	  int index = findElement(name);