code: public Injector openAnalysisJob(final FileObject fileObject, final AnalysisJobBuilder ajb) {
          final File file = VFSUtils.toFile(fileObject);
  
          if (file != null) {
              _userPreferences.setAnalysisJobDirectory(file.getParentFile());
              _userPreferences.addRecentJobFile(fileObject);
          }
  
          return Guice.createInjector(new DCModuleImpl(_parentModule, ajb) {
              public FileObject getJobFilename() {
                  return fileObject;
              }
  
          });
      }
docs: Opens a job builder
  
  @param fileObject
  @param ajb
  @return