Use provided callback object rather than making a copy
Use provided callback object rather than making a copy

basnijholt/holoviews,basnijholt/holoviews,ioam/holoviews,vascotenner/holoviews,vascotenner/holoviews,ioam/holoviews,basnijholt/holoviews,vascotenner/holoviews,ioam/holoviews