Full:
█
└─NULL %>% f() %>% g(1, 2) %>% h(3, ., 4)
  ├─base::withVisible(eval(quote(`_fseq`(`_lhs`)), env, env))
  └─base::eval(quote(`_fseq`(`_lhs`)), env, env)
    └─base::eval(quote(`_fseq`(`_lhs`)), env, env)
      └─rlang:::`_fseq`(`_lhs`)
        └─magrittr::freduce(value, `_function_list`)
          ├─base::withVisible(function_list[[k]](value))
          └─function_list[[k]](value)
            └─rlang:::h(3, ., 4)

Collapsed:
█
└─[ NULL %>% f() %>% g(1, 2) %>% h(3, ., 4) ] with 7 more calls
  └─rlang:::h(3, ., 4)

Branch:
 ─rlang:::f(.)
 ─rlang:::g(., 1, 2)
 ─rlang:::h(3, ., 4)
