== Why is this an issue?

Calling `ToString()` on an object should always return a string. Returning `Nothing` instead contravenes the method's implicit contract.

=== Noncompliant code example

[source,vbnet]
----
Public Overrides Function ToString() As String
    Return Nothing
End Function
----

=== Compliant solution

[source,vbnet]
----
Public Overrides Function ToString() As String
    Return ""
End Function
----

include::../see.adoc[]

ifdef::env-github,rspecator-view[]

'''
== Implementation Specification
(visible only on this page)

include::../message.adoc[]

'''
== Comments And Links
(visible only on this page)

include::../comments-and-links.adoc[]
endif::env-github,rspecator-view[]