What Rendering Plugin Does My File Use?

I received a SketchUp model file from my client. They had been working with a previous firm to generate their renderings, but for various reason, they have requested that I help them complete the project. The previous firm was generating final renders inside of Sketchup. Is there a way to tell what rendering extension the file is setup to use so I can make the necessary model changes and generate final images that match what the previous firm was producing? I’ve only modeled in SU. I normally import my model into 3ds Max then render final images with V-Ray, so rendering completely within SU is new to me. Any help is greatly appreciated.

Check the outliner for lights ( use filter eg type light )
Check materials in model
Check styles in model
Some clue might pop up

Some renderers store also attributes (custom properties) in materials or light source components. The names of these attribute dictionaries may contain a clue about the rendering plugin that stored them. You can browse attribute dictionaries by using the built-in Component Attributes viewer or by some extensions.

Thanks for the replies - I’ve been able to determine they used V-Ray.