let muse ~configuration bam_pair =     let make_target         ~(run_with: Machine.t) ~input ~result_prefix         ?more_edges () =       match input with | Variant_caller.Somatic {normal; tumor} ->       Muse.run ~configuration ?more_edges         ~run_with ~normal ~tumor ~result_prefix `Map_reduce in     somatic_variant_caller       {Variant_caller.name = "Muse";        configuration_json = Muse.Configuration.to_json configuration;        configuration_name = configuration.Muse.Configuration.name;        make_target }       bam_pair