code: public static CredentialUpdater updater(final String pathAccountSid, 
                                              final String pathCredentialListSid, 
                                              final String pathSid) {
          return new CredentialUpdater(pathAccountSid, pathCredentialListSid, pathSid);
      }
docs: Create a CredentialUpdater to execute update.
  
  @param pathAccountSid The unique id of the Account that is responsible for
  this resource
  @param pathCredentialListSid The unique id that identifies the credential
  list that includes this credential
  @param pathSid The unique id that identifies the resource to update
  @return CredentialUpdater capable of executing the update