How to use the graphql-dynamodb-transformer.makeModelSortDirectionEnumObject function in graphql-dynamodb-transformer

if (f.name.value === field.name.value) {
                        const updated = makeModelConnectionField(field.name.value, returnType.name.value, sortKeyInfo)
                        updated.directives = f.directives
                        return updated
                    }
                    return f;
                }
            )
            const updatedType = {
                ...type,
                fields: newFields
            }
            ctx.putType(updatedType)

            if (!this.typeExist('ModelSortDirection', ctx)) {
                const modelSortDirection = makeModelSortDirectionEnumObject()
                ctx.addEnum(modelSortDirection)
            }

            this.generateFilterAndKeyConditionInputs(ctx, returnType, sortKeyInfo)
        } else {
            throw new InvalidDirectiveError(`Could not find a object or interface type named ${parent.name.value}.`)
        }
    }

if (f.name.value === field.name.value) {
                        const updated = makeModelConnectionField(field.name.value, returnType.name.value, sortKeyInfo)
                        updated.directives = f.directives
                        return updated
                    }
                    return f;
                }
            )
            const updatedType = {
                ...type,
                fields: newFields
            }
            ctx.putType(updatedType)

            if (!this.typeExist('ModelSortDirection', ctx)) {
                const modelSortDirection = makeModelSortDirectionEnumObject()
                ctx.addEnum(modelSortDirection)
            }

            this.generateFilterAndKeyConditionInputs(ctx, returnType, sortKeyInfo)
        } else {
            throw new InvalidDirectiveError(`Could not find a object or interface type named ${parent.name.value}.`)
        }
    }