Required @param nonceStr

Required when tradeType is 'JSAPI' @param openId

One of transactionId/outTradeNo/outRefundNo/refundId is required @param outRefundNo

Required @param outRefundNo

One of transactionId/outTradeNo/outRefundNo/refundId is required @param outTradeNo

Required @param outTradeNo

Required when outTradeNo is null @param outTradeNo

Required if transactionId is null @param outTradeNo

Required. Unit FEN @param refundFee

Required @param spbillCreateIp

Send message to users by tag id, and {@code this#setIsToAll(false)} should be called @param tagId

Required. Unit FEN @param totalFee

Required. Unit FEN @param totalFee

Required. Options are 'JSAPI', 'NATIVE' and 'APP' @param tradeType

Required when outTradeNo is null @param transactionId

access_token should be updated every 2 hours, otherwise it will expire. Only one thread will really update access_token when multiple threads execute

@param getTokenUrl the request url to fetch access token @param appContext application context @throws NullPointerException if getTokenUrl is null

@param media {@code size <= 2M}, format: bmp|png|jpeg|jpg|gif

@param media {@code size <= 2M}, format: PNG\JPEG\JPG\GIF

@param appContext application context @param uploadUrl material upload URL @throws NullPointerException if any argument is null

@param appContext application context @param msgListeners to listen wechat inbound message @throws NullPointerException if appContext is null

@param appContext application context