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These three properties are configured by the instance configuration.

By setting the attribute configurable propagation to "true", you allow the property propagation to the service registration. It means that at each time that  the configuration of the instance is updated, all property contained in the configuration is propagate to the service registrations. For example, in the previous example, not only foo will be published but array and hello.lanaguage too.allows the exposition of the ManagedService service. Therefore, when a new configuration is pushed, the published service properties changes too.

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