code: public static List<FieldDefinition> getKeys(final String repositoryName) {
          final List<RepositoryDefinition> repositoryDefs = getRepositoryDefinitions();
          for (final RepositoryDefinition repositoryDefinition : repositoryDefs) {
              if (StringUtils.equals(repositoryName, repositoryDefinition.getName())) {
                  return repositoryDefinition.getKeys();
              }
          }
  
          return null;
      }
docs: Gets keys of the repository specified by the given repository name.
  
  @param repositoryName the given repository name
  @return keys