code: function add(keyId, sshKey, callback) {
      try {
        sshKeyparser(sshKey);
      }catch (e) {
        return callback(e);
      }
  
      commons.post(format('/%s/keys/', deis.version), {
        id: keyId || deis.username,
        'public': sshKey
      },callback);
    }
docs: add an SSH key