Custom parameter source for dotless engine

gistfile1.cs

public class DictionaryParameterSource : IParameterSource {
  public DictionaryParameterSource(IDictionary<string, string> parameters) {
    this.parameters = new Dictionary<string, string>(parameters);
  }
  
  public IDictionary<string, string> GetParameters() {
    return this.parameters;
  }
}

var engine = new EngineFactory(DotlessConfiguration.GetDefault()).GetEngine();
var decoratedEngine = new ParameterDecorator(engine, new DictionaryParameterSource(new Dictionary<string, string> {
    	{ "param1", "value" }
}));
decoratedEngine.TransformToCss(less, null);