@java.lang.Override
    public com.google.protobuf.ByteString getCidrBlockBytes() {
      java.lang.Object ref = cidrBlock_;
      if (ref instanceof java.lang.String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        cidrBlock_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
Optional. cidr_block must be specified in CIDR notation when using
master_authorized_networks_config. Currently, the user could still use
the deprecated man_block field, so this field is currently optional, but
will be required in the future.
</pre>

<code>string cidr_block = 2 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The bytes for cidrBlock.
java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/MasterAuthorizedNetworksConfig.java