class Pry::Command::SwitchTo

def process(selection)

def process(selection)
  selection = selection.to_i
  if selection < 0 || selection > pry_instance.binding_stack.size - 1
    raise CommandError,
          "Invalid binding index #{selection} - use `nesting` command " \
          "to view valid indices."
  else
    Pry.start(pry_instance.binding_stack[selection])
  end
end