AddImageToPDFValve
Add a image to on or more pages to an existing PDF document
Valve operates on a single item.
Properties
Example Configuration
{
      "name" : "AddImageToPDFValve",
      "enabled" : "true",
      "config" : {
        "pathToImage" : "<path to my image>/theimage.png",
        "pdfSource" : "{{session.pdf_data}}",
        "imagelocation" : "northwest"
      }
    }
Requirements
Item set must have one entry. Image must be located on local filesystem and be of typ .png.