How to create a feature for an empty Udig layer

Assume you have a new created layer in your Udig workspace. Now you want to programmatically add a feature to it by just knowing its coordinates.

You will need to create a feature that adapts to the schema you layer will have.
I was used to take a feature from the layer, duplicate it and change attributes and geometry in the past. Oviously this isn't very nice and I finally found the limitation. So here is what to do if you have no feature to copy from.

          FeatureSource source = layer
                  .getResource(FeatureSource.class, new NullProgressMonitor());
          if (source == null) {
              throw new LayerNotSupportedException(
                      "This layer is not supported, only feature layers are supported.");
          }
          // get the featurecollection from the layer, even if empty
          FeatureCollection selectedFeatureCollection = source.getFeatures();
              /*
               * in this case the feature has to be created on the blueprint of the layer's
               * features, asking the user for the new attributes to use. Note that getFeatureType
               * here doesn't supply hwat you want.
               */
              FeatureType featureType = selectedFeatureCollection.getSchema();
              /*
               * try to create default features where possible
               */
              Object attributes[] = DataUtilities.defaultValues(featureType);
              /*
               * geometry is not created as default, so add yours
               */
              attributes[0] = gFac.createPoint(new Coordinate(0.0, 0.0));
              featureToUse = featureType.create(attributes);

Feature is created.