'Create a new instance of a AMQP ContentHeader object
:param int channel_number: The channel number for the frame
:param int body_size: The number of bytes for the body
:param pika.spec.BasicProperties props: Basic.Properties object'

def __init__(self, channel_number, body_size, props):

    Frame.__init__(self, spec.FRAME_HEADER, channel_number)
    self.body_size = body_size
    self.properties = props
