What is the process for a criminal defendant to petition for a recall of their criminal conviction under Proposition 47?

"Proposition 47 also created a new resentencing provision: section 1170.18. Under section 1170.18, a person 'currently serving' a felony sentence for an offense that is now a misdemeanor under Proposition 47, may petition for a recall of that sentence and request resentencing in accordance with the statutes that were added or amended by Proposition 47. ( 1170.18, subd. (a).) A person who satisfies the criteria in section 1170.18 shall have his or her sentence recalled and be 'resentenced to a misdemeanor ... unless the court, in its discretion, determines that resentencing the petitioner would pose an unreasonable risk of danger to public safety.' ( 1170.18, subd. (b).) Subdivision (c) of section 1170.18 defines the term 'unreasonable risk of danger to public safety,' and subdivision (b) of the statute lists factors the court must consider in determining 'whether a new sentence would result in an unreasonable risk of danger to public safety.' ( 1170.18, subds. (b), (c).)" (People v. Rivera, supra, 233 Cal.App.4th at p. 1092.)

Here, defendant did not petition the trial court for recall of his sentence. The plain language of section 1170.18, however, requires a defendant to first file "a petition to recall (if currently serving the sentence) or an application to redesignate (if the sentence is completed) in the superior court of conviction." (People v. Diaz (2015) 238 Cal.App.4th 1323, 1331-1332 (Diaz).)³