#10125 fix DefaultCodegen parsing to handle 'uniqueItems' flag

Author: akshpan

modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenProperty.java

@@ -56,6 +56,7 @@ public class CodegenProperty implements Cloneable {
     public String enumName;
     public Integer maxItems;
     public Integer minItems;
+    public boolean uniqueItems;
 
     // XML
     public boolean isXmlAttribute = false;

modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java

@@ -1932,6 +1932,7 @@ private CodegenProperty fromProperty(String name, Property p, Integer itemsDepth
             ArrayProperty ap = (ArrayProperty) p;
             property.maxItems = ap.getMaxItems();
             property.minItems = ap.getMinItems();
+            property.uniqueItems = ap.getUniqueItems() == null ? false : ap.getUniqueItems();
             String itemName = (String) p.getVendorExtensions().get("x-item-name");
             if (itemName == null) {
                 itemName = property.name;