Heirs and Beneficiaries: Declaration of Heirs Puerto Rico

My questions involve estate proceedings in Puerto Rico:

Is a Declaration of Heirs a public document?

If a Declaration of Heirs is not a public document then what interested parties may view it?

Once a judge has granted a Declaration of Heirs, where (government agency/building) is the document kept/filed as a record of the event?

Whether or not it is a public document, what is the process to obtain a copy of a Declaration of Heirs?

Thank you.

Heirs and Beneficiaries: Declaration of Heirs Puerto Rico