'Initialize an instance of :class:`DimensionDataIpAddress`
:param begin: IP Address Begin
:type  begin: ``str``
:param end: IP Address end
:type  end: ``str``
:param prefixSize: IP Address prefix size
:type  prefixSize: ``int``'

def __init__(self, begin, end=None, prefix_size=None):

    self.begin = begin
    self.end = end
    self.prefix_size = prefix_size
