There must be ``constraint`` ``num:d`` instance(s) of \ .\ ``entity``\ .\ 
==========================================================================

.. container:: prewrap

   | The Given step_impl in combination with 'at least 1' is the equivalent of 'Given an IfcEntity', but without setting new applicable instances.
   | For example:
   | Given an IfcWall -> insts = [IfcWall, IfcWall]
   | Given an IfcRoof -> inst = [IfcRoof, IfcRoof]
   | 
   | However,
   | Given an IfcWall -> insts = [IfcWall, IfcWall]
   | Given there must be at least 1 instance(s) of IfcRoof -> inst = [IfcWall, IfcWall]

Usages:
~~~~~~~

 - **Then** *There must be at least 1 instance(s) of .IfcProjectedCRS.*

   :doc:`/features/GRF003_CRS-presence-with-spatial-entities`:15

 - **Then** *There must be at least 1 instance(s) of .IfcCoordinateReferenceSystem.*

   :doc:`/features/GRF003_CRS-presence-with-spatial-entities`:22

 - **Then** *There must be exactly 1 instance(s) of .IfcProject.*

   :doc:`/features/PJS101_Project-presence`:12

 - **Then** *There must be at most 1 instance(s) of .IfcSite.*

   :doc:`/features/SPS001_Basic-spatial-structure-for-buildings`:14

 - **Then** *There must be at least 1 instance(s) of .IfcBuilding.*

   :doc:`/features/SPS001_Basic-spatial-structure-for-buildings`:18