private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.video.livestream.v1.Input.SecurityRule,
            com.google.cloud.video.livestream.v1.Input.SecurityRule.Builder,
            com.google.cloud.video.livestream.v1.Input.SecurityRuleOrBuilder>
        getSecurityRulesFieldBuilder() {
      if (securityRulesBuilder_ == null) {
        securityRulesBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.video.livestream.v1.Input.SecurityRule,
                com.google.cloud.video.livestream.v1.Input.SecurityRule.Builder,
                com.google.cloud.video.livestream.v1.Input.SecurityRuleOrBuilder>(
                getSecurityRules(), getParentForChildren(), isClean());
        securityRules_ = null;
      }
      return securityRulesBuilder_;
    }
<pre>
Security rule for access control.
</pre>

<code>.google.cloud.video.livestream.v1.Input.SecurityRule security_rules = 12;</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/Input.java