code: public Map<String, String> getUriVariablesForMeta(String entityType, MetaParameter metaParameter, Set<String> fieldSet, Integer privateLabelId) {
          Map<String, String> uriVariables = new LinkedHashMap<String, String>();
          String bhRestToken = bullhornApiRest.getBhRestToken();
          uriVariables.put(BH_REST_TOKEN, bhRestToken);
          uriVariables.put(ENTITY_TYPE, entityType);
          String fields = this.convertFieldSetToString(fieldSet);
          uriVariables.put(FIELDS, fields);
  
          if (metaParameter == null) {
              uriVariables.put(META, MetaParameter.BASIC.getName());
          } else {
              uriVariables.put(META, metaParameter.getName());
          }
  
          if(privateLabelId != null) {
              uriVariables.put(PRIVATE_LABEL_ID, privateLabelId.toString());
          }
  
          return uriVariables;
      }
docs: Returns the uri variables needed for a meta call.
  
  @param entityType
  @param metaParameter
  @param fieldSet
  @return