成员的完整列表，这些成员属于 com.hyphenate.chat.EMTextMessageBody,包括所有继承而来的类成员

EMTextMessageBody(String msg)	com.hyphenate.chat.EMTextMessageBody
getMessage()	com.hyphenate.chat.EMTextMessageBody
getTargetLanguages()	com.hyphenate.chat.EMTextMessageBody
getTranslations()	com.hyphenate.chat.EMTextMessageBody
operationCount()	com.hyphenate.chat.EMMessageBody
operationTime()	com.hyphenate.chat.EMMessageBody
operatorId()	com.hyphenate.chat.EMMessageBody
setMessage(String message)	com.hyphenate.chat.EMTextMessageBody
setTargetLanguages(List< String > languageList)	com.hyphenate.chat.EMTextMessageBody