Code samples

gistfile1.txt

```java
// optional examples 
//      in this case if masterGroup is null we will return the orElse part -> if it is not null we will return the actual object
//      return   masterGroupEntityModel.orElse(MasterGroupEntityModel.builder().id(5).build());


//        this call will check the getName in mastrGroup and if getName is not null it will return name if it is null it will return HSBC
       return masterGroupEntityModel.map(MasterGroupEntityModel::getName)
                .orElse("HSBC");
```