'Confirm the temporary avatar image previously uploaded with the specified cropping.
After a successful registry with :py:meth:`create_temp_project_avatar`, use this method to confirm the avatar
for use. The final avatar can be a subarea of the uploaded image, which is customized with the
``cropping_properties``: the return value of :py:meth:`create_temp_project_avatar` should be used for this
argument.
:param project: ID or key of the project to confirm the avatar in
:param cropping_properties: a dict of cropping properties from :py:meth:`create_temp_project_avatar`'

@translate_resource_args
def confirm_project_avatar(self, project, cropping_properties):

    data = cropping_properties
    url = self._get_url(((u'project/' + project) + u'/avatar'))
    r = self._session.post(url, data=json.dumps(data))
    return json_loads(r)
