public String getHeaderValue() {
        return this.headerValue;
    }
<p>
The content to include in the header. This value can contain up to 2048 characters. It can't contain newline (
<code>\n</code>) or carriage return (<code>\r</code>) characters.
</p>

@return The content to include in the header. This value can contain up to 2048 characters. It can't contain
        newline (<code>\n</code>) or carriage return (<code>\r</code>) characters.
aws-java-sdk-ses/src/main/java/com/amazonaws/services/simpleemail/model/AddHeaderAction.java