public CreateReceiptRuleRequest withAfter(String after) {
        setAfter(after);
        return this;
    }
<p>
The name of an existing rule after which the new rule is placed. If this parameter is null, the new rule is
inserted at the beginning of the rule list.
</p>

@param after
       The name of an existing rule after which the new rule is placed. If this parameter is null, the new rule
       is inserted at the beginning of the rule list.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ses/src/main/java/com/amazonaws/services/simpleemail/model/CreateReceiptRuleRequest.java