LightmapProbe represents the position of a single manually placed probe for dynamic object lighting with LightmapGI.
Typically, LightmapGI probes are placed automatically by setting LightmapGI.generate_probes_subdiv to a value other than LightmapGI.GENERATE_PROBES_DISABLED. By creating LightmapProbe nodes before baking lightmaps, you can add more probes in specific areas for greater detail, or disable automatic generation and rely only on manually placed probes instead.