ambient_auth.pony

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primitive AmbientAuth
  """
  This type represents the root capability. When a Pony program starts, the
  Env passed to the Main actor contains an instance of the root capability.

  Ambient access to the root capability is denied outside of the builtin
  package. Inside the builtin package, only Env creates a Root.

  The root capability can be used by any package that wants to establish a
  principle of least authority. A typical usage is to have a parameter on a
  constructor for some resource that expects a limiting capability specific to
  the package, but will also accept the root capability as representing
  unlimited access.
  """
  new _create() =>
    None