The Office of the Register of Wills is a quasi-judicial one, created by statute. The current statutory provisions are contained in the Probate, Estates and Fiduciaries Code ("PEF Code"), 20 Pa.C.S.A. §§102, 901-911, 921-925, 3131-3138, 3171 and 3181 (formerly Register of Wills Act of 1951, P.L. 538; 20 P.S. §1840.101 et seq.).