The 'download' buttons for layers in this data catalogue... https://environment.data.gov.uk/ds/catalogue/index.jsp#/catalogue
...used to resolve to fixed URLs that we could call from FME to fetch the data.
They are now function calls on a widget...
<a ng-if="layer.format" target="_self" href="javascript: void(0);" ng-click="vm.performDownload(layer)" bs-tooltip="" data-title="Click to download"> <img src="images/download-small.png"> </a>
There are no requests when the button is clicked so a POST won't do the job of a button click.
Does anybody know a way to programmatically click the download button or to get hold of the payload by any means?