docs: public TransformActionBuilder xslt(Resource xsltResource, Charset charset) {
  	    try {
  	        action.setXsltData(FileUtils.readToString(xsltResource, charset));
  	    } catch (IOException e) {
              throw new CitrusRuntimeException("Failed to read xstl resource", e);
          }
  
  		return this;
  	}