code: List<HttpParameter> asPostParameterList(char[] supportedParams, String perPageParamName) {
          java.util.List<HttpParameter> pagingParams = new ArrayList<HttpParameter>(supportedParams.length);
          addPostParameter(supportedParams, 's', pagingParams, "since_id", getSinceId());
          addPostParameter(supportedParams, 'm', pagingParams, "max_id", getMaxId());
          addPostParameter(supportedParams, 'c', pagingParams, perPageParamName, getCount());
          addPostParameter(supportedParams, 'p', pagingParams, "page", getPage());
          if (pagingParams.size() == 0) {
              return NULL_PARAMETER_LIST;
          } else {
              return pagingParams;
          }
      }
docs: /*package