Cal. PROB § 13116

The procedure provided in this chapter is in addition to and supplemental to any other procedure for (1) collecting money due to a decedent, (2) receiving tangible personal property of a decedent, or (3) having evidence of ownership of property of a decedent transferred. Nothing in this chapter restricts or limits the release of tangible personal property of a decedent pursuant to any other provision of law. This section is declaratory of existing law.