A function to convert null to string
<p>I want to create a function to convert any null value e.g. from a database to an empty string.
I know there are methods such as if value != null ?? value : String Empty but is there a way to pass null to a method e.g.</p>

<pre><code>public string nullToString(string? value)
{
    if(value == null) return empty;
    return value
}
</code></pre>

<p>But I am not sure on the paremter syntax to do this..</p>

<p>I tried the above but it says not a nullable type.</p>

<p>Thanks in advance.</p>
