fix(Compare and Comply): Fix property definition to avoid serialization errors

Author: lpatino10

compare-comply/src/main/java/com/ibm/watson/compare_comply/v1/model/KeyValuePair.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 IBM Corp. All Rights Reserved.
+ * (C) Copyright IBM Corp. 2019.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -12,6 +12,8 @@
  */
 package com.ibm.watson.compare_comply.v1.model;
 
+import java.util.List;
+
 import com.ibm.cloud.sdk.core.service.model.GenericModel;
 
 /**
@@ -20,7 +22,7 @@
 public class KeyValuePair extends GenericModel {
 
   private Key key;
-  private Value value;
+  private List<Value> value;
 
   /**
    * Gets the key.
@@ -36,11 +38,11 @@ public Key getKey() {
   /**
    * Gets the value.
    *
-   * A value in a key-value pair.
+   * A list of values in a key-value pair.
    *
    * @return the value
    */
-  public Value getValue() {
+  public List<Value> getValue() {
     return value;
   }
 }