Clear all virtual tracks from the current environment
emr_vtrack.clear()
None.
emr_db.init_examples()
#> NULL
emr_vtrack.create("vtrack1", "dense_track")
emr_vtrack.ls()
#> [1] "v1" "vtrack1"
emr_vtrack.clear()
#> NULL
emr_vtrack.ls()
#> character(0)