Available on all targets
@:value(cast 0)@:impl@:enuminlineread onlyNONE:PreloadStatus = 0
@:value(cast 1)@:impl@:enuminlineread onlyLOADING:PreloadStatus = 1
@:value(cast 2)@:impl@:enuminlineread onlySUCCESS:PreloadStatus = 2
@:value(cast -1)@:impl@:enuminlineread onlyERROR:PreloadStatus = -1