public String getRegistryId() {
        return this.registryId;
    }
<p>
The Amazon Web Services account ID associated with the registry associated with the pull through cache rule. If
you do not specify a registry, the default registry is assumed.
</p>

@return The Amazon Web Services account ID associated with the registry associated with the pull through cache
        rule. If you do not specify a registry, the default registry is assumed.
aws-java-sdk-ecr/src/main/java/com/amazonaws/services/ecr/model/UpdatePullThroughCacheRuleRequest.java