Add nullable annotations
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ericgreenmix/marten,JasperFx/Marten,ericgreenmix/marten,JasperFx/Marten,mysticmind/marten,mysticmind/marten,JasperFx/Marten,ericgreenmix/marten,ericgreenmix/marten,mysticmind/marten,mysticmind/marten