code: public boolean containsCurrentBlocksOnTiers(
        java.lang.String key) {
      if (key == null) { throw new java.lang.NullPointerException(); }
      return internalGetCurrentBlocksOnTiers().getMap().containsKey(key);
    }
docs: <pre>
  * the map of list of blocks on each tier
  </pre>
  
  <code>map&lt;string, .alluxio.grpc.block.TierList&gt; currentBlocksOnTiers = 5;</code>