docs: @Override
      public synchronized boolean isChainRunning(ChainData chain) {
          if (null == chain) {
              if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
                  Tr.debug(tc, "isChainRunning(null): false");
              }
              return false;
          }
          return isChainRunning(chain.getName());
      }