57. Power to call witness for cross-examination on hearsay evidence

Court procedure rules may provide that where a party to proceedings adduces hearsay evidence of a statement made by a person and does not call that person as a witness, any other party to the proceedings may, with the leave of the Court, call that person as a witness and cross-examine him on the statement as if he had been called by the first-mentioned party and as if the hearsay statement were his evidence-in-chief.