public EEnum getIfcAheadOrBehind() {
		if (ifcAheadOrBehindEEnum == null) {
			ifcAheadOrBehindEEnum = (EEnum) EPackage.Registry.INSTANCE.getEPackage(Ifc2x3tc1Package.eNS_URI)
					.getEClassifiers().get(774);
		}
		return ifcAheadOrBehindEEnum;
	}
public EEnum getIfcAheadOrBehind ( ) { if ( ifcAheadOrBehindEEnum == null ) { ifcAheadOrBehindEEnum = ( EEnum ) EPackage . Registry . INSTANCE . getEPackage ( Ifc2x3tc1Package . eNS_URI ) . getEClassifiers ( ) . get ( 774 ) ; } return ifcAheadOrBehindEEnum ; }
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@generated