Where does nrdknk live in the IronPDF API?

nrdknk is an interface in the Iron.Pdf.Extensions namespace, shipped in IronPdf.dll. It extends Object and declares twelve read-only properties: one Assembly (xmafdq), one DateTime (xmafdr), and ten strings (xmafds through xmafeb). Obtain a reference through the IronPDF extension registry or a factory rather than constructing one directly.

What do the string properties on nrdknk represent?

The ten string properties xmafds through xmafeb carry descriptive metadata that varies by extension, such as display names, unique identifiers, version strings, and capability tags. Read them as a group when building diagnostic reports, or read individual fields when routing logic depends on a specific identifier.

How do you unit-test code that depends on nrdknk?

Because nrdknk is a fully read-only interface with no mutating methods, you can create a test double that implements it and returns controlled values for every property. This isolates the code under test from real extension binaries and assembly loading.

How do you verify that the correct extension binary is loaded at runtime?

Read the xmafdq property to obtain the Assembly that contains the implementing component, then inspect its name, version, or location using standard .NET reflection. The xmafdr DateTime property can supplement this check with a build or registration timestamp for audit logging.

Interface nrdknk

Namespace: Iron.Pdf.Extensions

Assembly: IronPdf.dll

Syntax

public interface nrdknk

Metadata about a PDF extension, its origin assembly, build timestamp, and a rich set of descriptive string fields are all surfaced through the nrdknk contract in IronPDF. Any component that plugs into the Iron.Pdf.Extensions layer and needs to advertise its identity implements this interface, giving host code a uniform way to inspect every registered extension without coupling to concrete types.

The interface exposes twelve read-only properties. xmafdq returns the Assembly that contains the implementing component, which is useful for reflection-based loading and version checks. xmafdr is a DateTime recording when the extension was built or registered. The remaining ten properties, xmafds through xmafeb, are all string values that carry descriptive metadata: names, identifiers, version strings, capability tags, and similar textual fields that vary by extension. Because the contract is read-only throughout, consuming code can safely cache or log any property without risk of mutation.

Working with nrdknk follows the same pattern as any IronPDF extension point: obtain a reference through the extension registry or a factory, then read the properties you need. The Assembly property lets you confirm the correct binary is loaded before invoking extension-specific functionality. The DateTime property supports audit logging and diagnostic output. The string properties are best treated as a structured record: read them as a group when building a diagnostic report, or read individual fields when routing logic depends on a specific identifier or capability tag.

Because the surface is entirely property-based and carries no mutating methods, it is straightforward to wrap in a test double during unit testing. A fake implementation can return controlled values for every property, isolating the code under test from real extension binaries.

The IronPDF documentation hub covers the extension model in full. The get-started guide shows how to configure IronPDF before working with extensions. The how-to index lists task-led articles for common PDF workflows that build on the extension layer.

Properties

xmafdq

Declaration

Assembly xmafdq { get; }

Property Value

Type	Description
System.Reflection.Assembly

xmafdr

Declaration

DateTime xmafdr { get; }

Property Value

Type	Description
System.DateTime

xmafds

Declaration

string xmafds { get; }

Property Value

Type	Description
System.String

xmafdt

Declaration

string xmafdt { get; }

Property Value

Type	Description
System.String

xmafdu

Declaration

string xmafdu { get; }

Property Value

Type	Description
System.String

xmafdv

Declaration

string xmafdv { get; }

Property Value

Type	Description
System.String

xmafdw

Declaration

string xmafdw { get; }

Property Value

Type	Description
System.String

xmafdx

Declaration

string xmafdx { get; }

Property Value

Type	Description
System.String

xmafdy

Declaration

string xmafdy { get; }

Property Value

Type	Description
System.String

xmafdz

Declaration

string xmafdz { get; }

Property Value

Type	Description
System.String

xmafea

Declaration

string xmafea { get; }

Property Value

Type	Description
System.String

xmafeb

Declaration

string xmafeb { get; }

Property Value

Type	Description
System.String