@PipelineProperty(description = "Additional HTTP Header 2, format is 'HeaderName: HeaderValue'",
            displayPriority = 30)
    public void setHttpHeadersUserDefinedHeader2(final String headerText) {
        this.httpHeadersUserDefinedHeader2 = headerText;
    }
Handler class that forwards the request to a URL.
stroom-pipeline/src/main/java/stroom/pipeline/writer/HTTPAppender.java