public TemplateActionDocument withOperatingSystem(String operatingSystem) {
        setOperatingSystem(operatingSystem);
        return this;
    }
<p>
Operating system eligible for this template post migration custom action.
</p>

@param operatingSystem
       Operating system eligible for this template post migration custom action.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-mgn/src/main/java/com/amazonaws/services/mgn/model/TemplateActionDocument.java