void function ( IndexModule arg0 ) { }
called before a new index is created on a node . the given module can be used to regsiter index-leve extensions . concode_field_sep PlaceHolder placeHolder concode_field_sep Collection<Module> nodeModules concode_elem_sep String name concode_elem_sep String description concode_elem_sep Settings additionalSettings concode_elem_sep void onModule concode_elem_sep Collection<Class<? extends LifecycleComponent>> nodeServices concode_elem_sep void onIndexService