Set the csl field in the document’s metadata to FILE, overriding any value set in the metadata. (This is equivalent to --metadata csl = FILE.) If FILE is a URL, it will be fetched via HTTP.If FILE is not found relative to the working directory, it will be sought in the resource path(see --resource-path) and finally in the csl subdirectory of the pandoc user data directory.

public FilePath Csl { get; set; }