@java.lang.Override
    public int getSerializedSize() {
      int size = memoizedSize;
      if (size != -1) return size;

      size = 0;
      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(displayName_)) {
        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, displayName_);
      }
      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(cidrBlock_)) {
        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, cidrBlock_);
      }
      size += getUnknownFields().getSerializedSize();
      memoizedSize = size;
      return size;
    }
<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