What are the implications of section 1381.5 of the California Penal Code for inmates in federal custody in this state?

6 Penal Code section 1381.5 is the counterpart for inmates in federal custody in this state. Penal Code section 1389, the "Agreement on Detainers," is the counterpart for persons incarcerated outside the state. (See People v. Watts, supra, 274 Cal.App.2d at pp. 759-760, 79 Cal.Rptr. 409.) We do not here discuss the details of these provisions, or whether they are constitutionally based, or how they may eventually apply to defendant; instead, we merely note that, in contrast to the arraignment provisions, they expressly address the problem of charges in multiple jurisdictions.