//提现手续费计算器WithdrawFeeCalculator
//计算手续费+ calculate()//获取支持的提现类型- abstract listWithdrawType()
//投资端-企业BidCorpFeeCalculator
//获取支持的提现类型- listWithdrawType()
//借款端-个人LoanPersonFeeCalculator
BaseBidFeeCalculator
//获取免提现次数+ getFreeCount()
//提现规则1WithdrawRule1
BaseLoanFeeCalculator
//提现规则2WithdrawRule1
//提现规则4WithdrawRule1
//收费规则IWithdrawRule
//投资端-个人BidPersonFeeCalculator
//提现规则3WithdrawRule1
//提现计算器工厂WithdrawFeeCalculatorFactory
//借款端-企业LoanCorpFeeCalculator
