code: @Override
      public File findArtifact(final Artifact artifact) {
          String type = artifact.getProperty("type", "jar");
          if ("ceylon-jar".equals(type) || "car".equals(type)) {
              if ("ceylon-jar".equals(type)) {
                  type = "jar";
              }
  
              File art = new File(CeylonUtil.ceylonSystemFullPath(artifact, type));
              
              if (art.isFile()) {
              	 if (logger != null) {
              		 logger.info("Resolved from Ceylon repo: " + artifact);
              	 }
                  artifact.setFile(art);
                  return art;
              }
          } 
          return null;
      }
docs: /* (non-Javadoc)
  @see org.eclipse.aether.repository.WorkspaceReader#findArtifact(org.eclipse.aether.artifact.Artifact)