Returns the value of RepresentationContexts attribute. This attribute represents context of the representations used within the context. When the context is a project and it includes shape representations for its components, one or several geometric representation contexts need to be included that define e.g. the world coordinate system, the coordinate space dimensions, and/or the precision factor.

IFC4 CHANGE: The attribute has been changed to be optional. Change made with upward compatibility for file-based exchange.