To create a beta channel, upload a file with a unique version string that contains any of the following strings: <code>a,b,alpha,beta,pre,rc</code>, with an optional number at the end. This text must come at the end of the version string. If you understand regex format, here's what we look for in the version number: <code>"(a|alpha|b|beta|pre|rc)\d*$"</code>.
如要创建一个公开测试通道，上传一个仅含有以下字符串之一的特殊版本字符串：<code>a,b,alpha,beta,pre,rc</code>，字符串末尾可以选择添加数字。此文字必须在版本字符串末尾。如果您理解正则表达式格式，这就是我们要在版本号里匹配查找的表达式：<code>"(a|alpha|b|beta|pre|rc)\d*$"</code>。