How to set which tabPanel to show when launching a Shiny app?

When I run the app, I want the tab 2 to be clicked, so I can see it first, not tab 1. How can I do so ?

# USER INTERFACE 
ui <-  fluidPage(
  mainPanel(
    tabsetPanel(
      tabPanel("tab 1"),
      tabPanel("tab 2"),
    )
  )
)
# SERVER 
server <- function(input, output) {
  
}
shinyApp(ui = ui, server = server)

>Solution :

Try:

tabSetPanel(tabPanel("tab1"), tabPanel("tab2"), selected="tab2")