rendering skeleton line widths based on attributes

Is it possible to vary the line width of a skeleton based on a vertex property?

using the emitLine shader function does not appear to be accessible in the shader... is there a way to write a shader to do this, or a modification of the code base that would allow for this?

This would enable more realistic renderings of skeletons where there is metadata about radius available at each vertex node (and potentially other visualizations that might want to alter the visibility of certain parts of skeletons in a way that is different that just colorizing them).