code: public EClass getIfcRelAssociatesConstraint() {
  		if (ifcRelAssociatesConstraintEClass == null) {
  			ifcRelAssociatesConstraintEClass = (EClass) EPackage.Registry.INSTANCE.getEPackage(Ifc2x3tc1Package.eNS_URI)
  					.getEClassifiers().get(451);
  		}
  		return ifcRelAssociatesConstraintEClass;
  	}
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated