code: public static Map<String, Object> getConfigForBranch(EntityType entityType, State taskState, int numBranches, int branch) {
      return getConfigForBranch(taskState,
          entityType.getConfigPrefix(),
          ForkOperatorUtils.getPropertyNameForBranch("", numBranches, branch));
    }
docs: Retrieve encryption config for a given branch of a task
  @param entityType Entity type we are retrieving config for
  @param taskState State of the task
  @param numBranches Number of branches overall
  @param branch Branch # of the current object
  @return A list of encryption properties or null if encryption isn't configured