(1) Subject to subsections (2) and (4) of this section, enactments relating to the discovery and production of documents and answering interrogatories by an order of a court shall apply to civil proceedings by or against the State to the same extent and in the same manner as the enactments apply to civil proceedings between private persons.

(2) Subsection (1) of this section applies without limiting the right to withhold any document or refuse to answer any question on the ground that disclosing the document or answering the question would be injurious to the public interest.

(3) Any order of a court related to answering interrogatories shall direct which person is to answer the interrogatories.

(4) A certificate from the Supreme Court that it is satisfied that the disclosure of a document is injurious to the public interest shall be conclusive evidence for the purposes of this section.