Get and set the sankey labels information
Examples
my_sankeyplan <- sankeySet(spat_unit = "cell",
feat_type = "rna", col = "leiden_clus")
my_sankeyplan <- `sankeyLabel<-`(my_sankeyplan, value = "my_label")
sankeyLabel(my_sankeyplan)
#> [1] "my_label"
my_sankeyplan <- sankeySet(spat_unit = "cell",
feat_type = "rna", col = "leiden_clus")
my_sankeyplan <- `sankeyLabel<-`(my_sankeyplan, value = "my_label")