code: @Post("/metadata/{projectName}/repos/{repoName}/perm/tokens")
      public CompletableFuture<Revision> addSpecificTokenPermission(
              @Param("projectName") String projectName,
              @Param("repoName") String repoName,
              IdentifierWithPermissions tokenWithPermissions,
              Author author) {
          return mds.addPerTokenPermission(author, projectName, repoName,
                                           tokenWithPermissions.id(), tokenWithPermissions.permissions());
      }
docs: POST /metadata/{projectName}/repos/{repoName}/perm/tokens
  
  <p>Adds {@link Permission}s for a token to the specified {@code repoName} in the specified
  {@code projectName}.