recursive equal on reflection (#4475)

Author: yue9944882

modules/openapi-generator/src/main/resources/Java/pojo.mustache

@@ -231,7 +231,7 @@ public class {{classname}} {{#parent}}extends {{{parent}}} {{/parent}}{{#parcela
   @Override
   public boolean equals(java.lang.Object o) {
   {{#useReflectionEqualsHashCode}}
-    return EqualsBuilder.reflectionEquals(this, o);
+    return EqualsBuilder.reflectionEquals(this, o, false, null, true);
   {{/useReflectionEqualsHashCode}}
   {{^useReflectionEqualsHashCode}}
     if (this == o) {