Habanero.Smooth.AllClassesAutoMapper.CreateReverseRelationship C# (CSharp) Method

        public static IRelationshipDef CreateReverseRelationship(ClassDefCol classDefCol, IClassDef classDef, IRelationshipDef relationship)
        {
            IRelationshipDef rel = relationship;
            if (!ContainsRelatedClass(relationship, classDefCol)) return null;

            IClassDef relatedClassDef = RelatedObjectClassDef(classDefCol, relationship);
            bool foundReverseRelationship = relatedClassDef.RelationshipDefCol.Any(
                def => def.RelationshipName == rel.ReverseRelationshipName);

            if (foundReverseRelationship) return null;

            IRelationshipDef newReverseRelDef = CreateReverseRelDef(rel, classDef);

            
            relatedClassDef.RelationshipDefCol.Add(newReverseRelDef);
            IRelPropDef relPropDef = relationship.RelKeyDef.FirstOrDefault();
            if (relPropDef != null)
            {
                var reverseRelPropDef = new RelPropDef(relPropDef.RelatedClassPropName, relPropDef.OwnerPropertyName);
                newReverseRelDef.RelKeyDef.Add(reverseRelPropDef);
                bool hasPropDef = relatedClassDef.PropDefColIncludingInheritance.Any(
                    propDef => propDef.PropertyName == reverseRelPropDef.OwnerPropertyName);
                if (!hasPropDef)
                {
                    var fkPropDef = new PropDef(reverseRelPropDef.OwnerPropertyName, typeof (Guid), PropReadWriteRule.ReadWrite, null);
                    relatedClassDef.PropDefcol.Add(fkPropDef);
                }
            }
            return newReverseRelDef;
        }