def __init__(self,<EOL>offering_code,<EOL>operations=[],<EOL>contents=[],<EOL>styles=[]<EOL>):
self.offering_code = offering_code<EOL>self.operations = operations<EOL>self.contents = contents<EOL>self.styles = styles<EOL>
constructor:

:param offering_code: URL
:param operations: List[OwcOperation]
:param contents: List[OwcContent]
:param styles: List[OwcStyleSet]