code: void init() throws KnowledgeSourceBackendInitializationException {
          if (this.project == null) {
              Util.logger().log(Level.FINE, "Opening Protege project {0}",
                      this.projectIdentifier);
              this.project = initProject();
              if (this.project == null) {
                  throw new KnowledgeSourceBackendInitializationException(
                          "Could not load project " + this.projectIdentifier);
              } else {
                  this.protegeKnowledgeBase = this.project.getKnowledgeBase();
                  Util.logger().log(Level.FINE,
                          "Project {0} opened successfully",
                          this.projectIdentifier);
              }
          }
      }
docs: Opens the project.
  
  @throws KnowledgeSourceBackendInitializationException if an error
  occurs.