code: private void parseMsgLargeBuffer(Map<Object, Object> props) {
          if (!areMessagesLimited()) {
              // if there isn't a standard size limit, ignore this extension to
              // that config option
              return;
          }
          String value = (String) props.get(HttpConfigConstants.PROPNAME_MSG_SIZE_LARGEBUFFER);
          if (null != value) {
              try {
                  long limit = Long.parseLong(value);
                  if (limit < getMessageSize() || HttpConfigConstants.UNLIMITED > limit) {
                      if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
                          Tr.debug(tc, "Config: Invalid large buffer limit: " + limit);
                      }
                      limit = getMessageSize();
                  }
                  this.msgSizeLargeBuffer = limit;
              } catch (NumberFormatException e) {
                  // no FFDC required
                  if (tc.isEventEnabled()) {
                      Tr.event(tc, "Config: Non-numeric large buffer size; " + value);
                  }
              }
          }
      }
docs: Parse the single larger buffer size that is allowed to reach beyond the
  standard buffer size
  
  @param props