<PackageReference Include="NLog" Version="6.0.7" />

NLog.LayoutRenderers.Wrappers.LowercaseLayoutRendererWrapper

Converts the result of another layout output to lower case.
public CultureInfo Culture { get; set; }

Gets or sets the culture used for rendering.

public bool Lowercase { get; set; }

Gets or sets a value indicating whether lower case conversion should be applied.

public bool ToLower { get; set; }

Same as Lowercase-property, so it can be used as ambient property.