code: public static String aggregateScript(List<String> scriptNames, ClassLoader scriptLoader)
              throws URISyntaxException, IOException {
          final StringBuilder aggregatedScript = new StringBuilder();
          for (String scriptName : scriptNames) {
              String scriptNameWithExtension = format("%s.rpt", scriptName);
              Path scriptPath = Paths.get(scriptNameWithExtension);
              scriptNameWithExtension = URI.create(scriptNameWithExtension).normalize().getPath();
              String script = null;
  
              assert !scriptPath.isAbsolute();
  
              // resolve relative scripts in local file system
              if (scriptLoader != null) {
                  // resolve relative scripts from class loader to support
                  // separated specification projects that include Robot scripts only
                  URL resource = scriptLoader.getResource(scriptNameWithExtension);
                  if (resource != null) {
                      URI resourceURI = resource.toURI();
                      if ("file".equals(resourceURI.getScheme())) {
                          Path resourcePath = Paths.get(resourceURI);
                          script = readScript(resourcePath);
                      } else {
                          try (FileSystem fileSystem = newFileSystem(resourceURI, EMPTY_ENVIRONMENT)) {
                              Path resourcePath = Paths.get(resourceURI);
                              script = readScript(resourcePath);
                          }
                      }
                  }
              }
  
              if (script == null) {
                  throw new RuntimeException("Script not found: " + scriptPath);
              }
  
              aggregatedScript.append(script);
          }
          return aggregatedScript.toString();
      }
docs: /*
  Public static because it is used in test utils