public Builder setNodeIdPrefixBytes(com.google.protobuf.ByteString value) {
            if (value == null) {
              throw new NullPointerException();
            }
            checkByteStringIsUtf8(value);
            nodeIdPrefix_ = value;
            bitField0_ |= 0x00000002;
            onChanged();
            return this;
          }
<pre>
Prefix of node_ids in case of multi-node request
Should follow the `^[A-Za-z0-9_.~+%-]+$` regex format.
If node_count = 3 and node_id_prefix = "np", node ids of nodes
created will be "np-0", "np-1", "np-2". If this field is not
provided we use queued_resource_id as the node_id_prefix.
</pre>

<code>string node_id_prefix = 2;</code>

@param value The bytes for nodeIdPrefix to set.
@return This builder for chaining.
java-tpu/proto-google-cloud-tpu-v2alpha1/src/main/java/com/google/cloud/tpu/v2alpha1/QueuedResource.java