This is a screenshot of the final project. The reflective plane is clearly visible in this screenshot. The mesh light is also present, however it is invisible. The mesh light node set up is shown in the upper portion of this screenshot.
This is a screenshot of the virtual studio with the Material Output node disconnected from the mix shader. This makes the Mesh Light visible, allowing you to see how Mesh Light surrounds the reflective surface, it is the pitch black structure in the background.