Returns the value of ObjectType attribute. This attribute represents the object type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes.

Returns the value of ObjectType attribute.

• NOTE: Subtypes of IfcContext do not introduce a PredefinedType attribute,

therefore the usage of ObjectType is not bound to the selection of USERDEFINED within the PredefinedType enumeration.