public Builder setCidrBlockBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      cidrBlock_ = value;
      bitField0_ |= 0x00000100;
      onChanged();
      return this;
    }
<pre>
The CIDR block that the TPU node will use when selecting an IP address.
This CIDR block must be a /29 block; the Compute Engine networks API
forbids a smaller block, and using a larger block would be wasteful (a
node can only consume one IP address). Errors will occur if the CIDR block
has already been used for a currently existing TPU node, the CIDR block
conflicts with any subnetworks in the user's provided network, or the
provided network is peered with another network that is using that CIDR
block.
</pre>

<code>string cidr_block = 13;</code>

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