@SuppressWarnings("unchecked")
	@Override
	public EList<IfcMaterial> getMaterials() {
		return (EList<IfcMaterial>) eGet(Ifc4Package.Literals.IFC_MATERIAL_LIST__MATERIALS, true);
	}
@ SuppressWarnings ( "unchecked" ) @ Override public EList < IfcMaterial > getMaterials ( ) { return ( EList < IfcMaterial > ) eGet ( Ifc4Package . Literals . IFC_MATERIAL_LIST__MATERIALS , true ) ; }
<!-- begin-user-doc -->
<!-- end-user-doc -->
@generated