&gt; : logLevel: LogLevel * eventId: EventId * state: &#39;TState * ``exception`` : exn * formatter: Func&lt;&#39;TState,exn,string&gt; -&gt; unit
  static member Instance: NullLogger<br /><em>&lt;summary&gt;
            Minimalistic logger that does nothing.
            &lt;/summary&gt;</em><br /><br />--------------------<br />type NullLogger&lt;&#39;T&gt; =
  interface ILogger&lt;&#39;T&gt;
  interface ILogger
  new: unit -&gt; unit
  member BeginScope&lt;&#39;TState&gt; : state: &#39;TState -&gt; IDispo