'Instantiate the driver with the given API credentials.
:param key: Your application key (required)
:type key: ``str``
:param secret: Your application secret (required)
:type secret: ``str``
:param ex_project_id: Your project ID
:type ex_project_id: ``str``
:param ex_consumer_key: Your consumer key (required)
:type ex_consumer_key: ``str``
:rtype: ``None``'

def __init__(self, key, secret, ex_project_id, ex_consumer_key=None):

    self.datacenter = None
    self.project_id = ex_project_id
    self.consumer_key = ex_consumer_key
    NodeDriver.__init__(self, key, secret, ex_consumer_key=ex_consumer_key)
