.. _exhale_define__ifc4x2-definitions_8h_1a4a2f8fedcf64c2970e5942e74bf995e9:

Define SCHEMA_IfcMaterialLayer_Material_IS_OPTIONAL
===================================================

- Defined in :ref:`file_src_ifcparse_Ifc4x2-definitions.h`


Define Documentation
--------------------


.. doxygendefine:: SCHEMA_IfcMaterialLayer_Material_IS_OPTIONAL