Id property in telemetry context not submitted

[marcelkieser]

In the documentation you set up the telemetry context in the following way and pass an id to the application object:

from applicationinsights import TelemetryClient
tc = TelemetryClient('<YOUR INSTRUMENTATION KEY GOES HERE>')
tc.context.application.id = 'My application'
tc.context.application.ver = '1.2.3'

But as only defined keys are written in the Utils._write_complex_object(...) method and the id property is not defined there it will not be transmitted:

class Application(object):
    """Data contract class for type Application.
    """
    _defaults = collections.OrderedDict([
        ('ai.application.ver', None)
    ])
...
   def write(self):
        """Writes the contents of this object and returns the content as a dict object.

        Returns:
            (dict). the object that represents the same data as the current instance.
        """
        return _write_complex_object(self._defaults, self._values)
...
def _write_complex_object(defaults, values):
    output = collections.OrderedDict()
    for key in defaults.keys():
        default = defaults[key]
        if key in values:

Is the documentation wrong or is the id property missing?