Modify default light settings?

Development Pipeline & Plugins
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2

It looks like this can be modified in the /Engine/Source/Runtime/Engine/Classes/Engine/Light.h file which has the line:

    /** Function to change the mobility type of light
    void SetMobility(EComponentMobility::Type InMobility);

So would I set it like this?

    void SetMobility(EComponentMobility::Type::Movable InMobility);