# Functions
NewSignerProxy创建一个新的签名器代理.
WithParallelCallback 设置初始化后回调并行执行而非串行执行.
# Variables
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ErrProxyAllreadySettedUniversalObject 代理不能重复设置客户端对象.
ErrProxyNotYetSettedUniversalObject 代理还未设置客户端对象.
# Type aliases
SignerCallback 签名器操作的回调函数.