code: public boolean handleKeyDeletion(final String key) {
  
          if (m_keyset.getKeySet().contains(key)) {
              if (removeKeyForAllLanguages(key)) {
                  m_keyset.removeKey(key);
                  return true;
              } else {
                  return false;
              }
          }
          return true;
      }
docs: Handles the deletion of a key.
  @param key the deleted key.
  @return <code>true</code> if the deletion was successful, <code>false</code> otherwise.