[NTG-context] processor for index sub-entry?

Hi, is it possible to apply a processor to an index sub-entry? \index{Modules+\type{filter}} looks good, but "filter" is sorted under "type". \defineprocessor[type][style=mono] \index{Modules+type->filter} results in a "Modules / type->filter" entry. \index[Modules+filter]{Modules+\type{filter}} works and looks good, but the code feels bad… Hraban