public Builder mergePersistenceConfig(com.google.cloud.memorystore.v1.PersistenceConfig value) {
      if (persistenceConfigBuilder_ == null) {
        if (((bitField0_ & 0x00008000) != 0)
            && persistenceConfig_ != null
            && persistenceConfig_
                != com.google.cloud.memorystore.v1.PersistenceConfig.getDefaultInstance()) {
          getPersistenceConfigBuilder().mergeFrom(value);
        } else {
          persistenceConfig_ = value;
        }
      } else {
        persistenceConfigBuilder_.mergeFrom(value);
      }
      if (persistenceConfig_ != null) {
        bitField0_ |= 0x00008000;
        onChanged();
      }
      return this;
    }
<pre>
Optional. Persistence configuration of the instance.
</pre>

<code>
.google.cloud.memorystore.v1.PersistenceConfig persistence_config = 14 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-valkey/proto-google-cloud-valkey-v1/src/main/java/com/google/cloud/memorystore/v1/Instance.java