code: public JobWithDetails updateDescription(String description, boolean crumbFlag) throws IOException {
          Objects.requireNonNull(description, "description is not allowed to be null.");
          //JDK9+
          // Map.of(...);
          Map<String, String> params = new HashMap<>();
          params.put("description", description);
          client.post_form(this.getUrl() + "/submitDescription?", params, crumbFlag);
          return this;
      }
docs: Update the <code>description</code> of a Job.
  
  @param description The description which should be set. If you like to
  set an empty description you should use
  {@link #EMPTY_DESCRIPTION}.
  @param crumbFlag <code>true</code> or <code>false</code>.
  @throws IOException in case of errors.