117. The fire investigation commissioner shall inform every person summoned as a witness of the right to abstain from giving testimony in the cases and subject to the conditions provided in articles 307 and 308 of the Code of Civil Procedure (chapter C‐25), and of the right of witnesses not to have any testimony given by them used to incriminate them in any other proceedings, except in a prosecution for perjury or for the giving of contradictory evidence. The fire investigation commissioner shall also inform every person under 18 years of age of the right to be represented by an advocate, grant the person reasonable time to retain the services of an advocate and, if necessary, delay the giving of the person’s testimony.