GMSNavigationLightingMode
enum GMSNavigationLightingMode : NSInteger {}Lighting mode is used to specify different color schemes based on available light.
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                  Use a lighting mode suitable for daylight viewing. DeclarationSwift case normal = 0Objective-C GMSNavigationLightingModeNormal = 0
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                  Use a lighting mode suitable for night viewing. DeclarationSwift case lowLight = 1Objective-C GMSNavigationLightingModeLowLight