public Object getMethodConfigValue(String methodName, String configKey) {
        String key = buildmkey(methodName, configKey);
        Object value = null;
        if (dynamicConfigValueCache != null) {
            value = dynamicConfigValueCache.get(key);
        }
        if (value == null) {
            if (configValueCache != null) {
                value = configValueCache.get(key);
            }
        }
        return value;
    }
Gets app name.

@return the app name
core/api/src/main/java/com/alipay/sofa/rpc/config/AbstractInterfaceConfig.java