source = ff.property("temp");
target = "sample/measurement[2]/value";
attMapping = new AttributeMapping(null, source, XPath.steps(targetFeature, target, namespaces));
mappings.add(attMapping);
source = ff.literal("turbidity");
target = "sample/measurement[3]/parameter";
attMapping = new AttributeMapping(null, source, XPath.steps(targetFeature, target, namespaces));
mappings.add(attMapping);
source = ff.property("turbidity");