Its .attribute. attribute ^prefix_condition:prefix_condition^ with ‘prefix’

‘
Given its attribute X must start with Y or Z
‘
Is almost the same as
‘
Given its attribute X
Its value must start with Y or Z
‘

However, when navigating the context stack and there is a subsequent step,
it is sometimes preferable to include the statement within a single step.

For example;
‘
(1)Given an entity IfcBuildingStorey
(2)Given its attribute X must start with Y or Z
(3)Given its relating Wall
(4)Then Some condition
‘
In this case, it is challenging to split step (2) into two separate steps and then return to the
relating Wall (step 3) of the entity in step (1). This is because the instances in the context will be
the content of the attribute X of IfcBuildingStorey rather than the storey itself.”

Usages: