private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.telcoautomation.v1.MasterAuthorizedNetworksConfig.CidrBlock,
            com.google.cloud.telcoautomation.v1.MasterAuthorizedNetworksConfig.CidrBlock.Builder,
            com.google.cloud.telcoautomation.v1.MasterAuthorizedNetworksConfig.CidrBlockOrBuilder>
        getCidrBlocksFieldBuilder() {
      if (cidrBlocksBuilder_ == null) {
        cidrBlocksBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.telcoautomation.v1.MasterAuthorizedNetworksConfig.CidrBlock,
                com.google.cloud.telcoautomation.v1.MasterAuthorizedNetworksConfig.CidrBlock
                    .Builder,
                com.google.cloud.telcoautomation.v1.MasterAuthorizedNetworksConfig
                    .CidrBlockOrBuilder>(
                cidrBlocks_, ((bitField0_ & 0x00000001) != 0), getParentForChildren(), isClean());
        cidrBlocks_ = null;
      }
      return cidrBlocksBuilder_;
    }
<pre>
Optional. cidr_blocks define up to 50 external networks that could access
Kubernetes master through HTTPS.
</pre>

<code>
repeated .google.cloud.telcoautomation.v1.MasterAuthorizedNetworksConfig.CidrBlock cidr_blocks = 1 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/MasterAuthorizedNetworksConfig.java