Rename attribute on register elements in pspec

[YurBoiRene]

I have a pspec that renames some registers like so (powerpc)

<register_data>
    <register name="spr3d6" rename="EVPR" group="SPR"/>
</register_data>

the problem is I am not seeing EVPR when I use GhidraTranslate:getAllRegisters(). is there a way to link EVPR and spr3d6/its varnode using libsleigh?

I f expected getAllRegisters to use the new name as this comment suggests

 <!-- IMPORTANT NOTE:
           If a register is renamed in the register_data section, any
           subsequent reference to that register must use the NEW name.
           Likewise, references before the rename must refer to the OLD
           name.

           Also, references in compiler specs to the registers must use
           the new name, because the compiler specs for a given language
           are loaded after the language is completely loaded.
           -->

I don't see any code in architecture.cc that reference the rename attribute.