WeChatFile.asset constructor
source path of the image, like '/asset/image.pdf?package=flutter', the query param package in source only available when you want to specify the package of image
Implementation
WeChatFile.asset(
String this.source, {
String? suffix,
}) : assert(source.trim().isNotEmpty),
schema = FileSchema.asset,
suffix = source.readSuffix(suffix, defaultSuffixTxt);