jetbrick-commons/src/main/java/jetbrick/reflect/KlassInfo.java
protected ASMAccessor getASMAccessor() {
        if (asmAccessor == null) {
            if (asmCallNumber >= ASMFactory.getThreshold()) {
                asmAccessor = ASMFactory.generateAccessor(this);
            } else {
                asmCallNumber++;
            }
        }
        return asmAccessor;
    }
protected ASMAccessor getASMAccessor() {
        if (asmAccessor == null) {
            if (asmCallNumber >= ASMFactory.getThreshold()) {
                asmAccessor = ASMFactory.generateAccessor(this);
            } else {
                asmCallNumber++;
            }
        }
        return asmAccessor;
    }
反射调用计数器，超过阈值，则使用 ASM 字节码增强技术