This subtitle is applicable to the portion of the probate proceeding which relates to the probate of a will, if any, and the grant of letters. Probate of a will, if any, and the grant of letters, may be accomplished after filing of a petition for probate by: Administrative probate by the register of wills as described in Subtitle 3 of this title; or Judicial probate by the court as described in Subtitle 4 of this title.