Problem

Changing type (java) with managed FQCVlassName works:

https://github.com/moljac/Samples.AndroidX/blob/master/source/bindings/type-vs-managedType/source/androidx.leanback/leanback-preference/transforms/Metadata.xml#L6-L7

    <attr path="/api/package[@name='androidx.leanback.preference']/class[@name='LeanbackListPreferenceDialogFragment.AdapterMulti']/method[@name='onBindViewHolder']/parameter[1]" name="type">AndroidX.RecyclerView.Widget.RecyclerView.ViewHolder</attr>
    <attr path="/api/package[@name='androidx.leanback.preference']/class[@name='LeanbackListPreferenceDialogFragment.AdapterSingle']/method[@name='onBindViewHolder']/parameter[1]" name="type">AndroidX.RecyclerView.Widget.RecyclerView.ViewHolder</attr>

while changing managedType causes build errors (does not change managed type):

https://github.com/moljac/Samples.AndroidX/blob/master/source/bindings/type-vs-managedType/source/androidx.leanback/leanback-preference/transforms/Metadata.xml#L26-L36

    <attr 
        path="/api/package[@name='androidx.leanback.preference']/class[@name='LeanbackListPreferenceDialogFragment.AdapterMulti']/method[@name='onBindViewHolder']/parameter[1]" 
        name="managedType"
        >
        AndroidX.RecyclerView.Widget.RecyclerView.ViewHolder</attr>
    <attr 
        path="/api/package[@name='androidx.leanback.preference']/class[@name='LeanbackListPreferenceDialogFragment.AdapterSingle']/method[@name='onBindViewHolder']/parameter[1]" 
        name="managedType"
        >
        AndroidX.RecyclerView.Widget.RecyclerView.ViewHolder
    </attr>

Errors:

    generated/androidx.leanback.leanback-preference/obj/Debug/monoandroid90/generated/src/AndroidX.Leanback.Preference.LeanbackListPreferenceDialogFragment.cs(24,24): 
    Error CS0534: 
        'LeanbackListPreferenceDialogFragment.AdapterMulti' 
    does not implement inherited abstract member 
        'RecyclerView.Adapter.OnBindViewHolder(RecyclerView.ViewHolder, int)'
    
    generated/androidx.leanback.leanback-preference/obj/Debug/monoandroid90/generated/src/AndroidX.Leanback.Preference.LeanbackListPreferenceDialogFragment.cs(24,24):
    Error CS0534: 
        'LeanbackListPreferenceDialogFragment.AdapterSingle' 
    does not implement inherited abstract member 
        'RecyclerView.Adapter.OnBindViewHolder(RecyclerView.ViewHolder, int)' 

References Links

Solution (minimal repro) is zipped/archived in:

https://github.com/moljac/Samples.AndroidX/blob/master/source/bindings/type-vs-managedType.zip

api.xml

https://github.com/moljac/Samples.AndroidX/blob/master/source/bindings/type-vs-managedType/api.xml