public RuleAction withAddHeader(AddHeaderAction addHeader) {
        setAddHeader(addHeader);
        return this;
    }
<p>
This action adds a header. This can be used to add arbitrary email headers.
</p>

@param addHeader
       This action adds a header. This can be used to add arbitrary email headers.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-mailmanager/src/main/java/com/amazonaws/services/mailmanager/model/RuleAction.java