public Core withThingArn(String thingArn) {
        setThingArn(thingArn);
        return this;
    }
The ARN of the thing which is the core.

@param thingArn
       The ARN of the thing which is the core.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-greengrass/src/main/java/com/amazonaws/services/greengrass/model/Core.java