introspect_write_arguments  145 src/libsystemd/sd-bus/bus-introspect.c                         introspect_write_arguments(i, strempty(v->x.method.signature), "in");
introspect_write_arguments  146 src/libsystemd/sd-bus/bus-introspect.c                         introspect_write_arguments(i, strempty(v->x.method.result), "out");
introspect_write_arguments  163 src/libsystemd/sd-bus/bus-introspect.c                         introspect_write_arguments(i, strempty(v->x.signal.signature), NULL);