成员的完整列表，这些成员属于 com.netease.nimlib.sdk.qchat.result.QChatAddMembersToServerRoleResult,包括所有继承而来的类成员

getFailedAccids()	com.netease.nimlib.sdk.qchat.result.QChatAddMembersToServerRoleResult
getSuccessAccids()	com.netease.nimlib.sdk.qchat.result.QChatAddMembersToServerRoleResult
QChatAddMembersToServerRoleResult(List< String > successAccids, List< String > failedAccids)	com.netease.nimlib.sdk.qchat.result.QChatAddMembersToServerRoleResult
toString()	com.netease.nimlib.sdk.qchat.result.QChatAddMembersToServerRoleResult