\donttest{
  # Check Suggests.
  value <- SCpubr:::check_suggests(function_name = "do_SCEnrichmentHeatmap", passive = TRUE)
  
  if (isTRUE(value)){
    # Consult the full documentation in https://enblacar.github.io/SCpubr-book/
    
    # Define your Seurat object.
    sample <- readRDS(system.file("extdata/seurat_dataset_example.rds", package = "SCpubr"))
    
    # Genes have to be unique.
    genes <- list("A" = rownames(sample)[1:5],
                  "B" = rownames(sample)[6:10],
                  "C" = rownames(sample)[11:15])
    
    p <- SCpubr::do_SCEnrichmentHeatmap(sample = sample,
                                        input_gene_list = genes,
                                        nbin = 1,
                                        ctrl = 5,
                                        flavor = "Seurat",
                                        subsample = NA)
    p
    
  } else if (base::isFALSE(value)){
    message("This function can not be used without its suggested packages.")
    message("Check out which ones are needed using `SCpubr::state_dependencies()`.")
  }
}
