public void setAccountId(String accountId) {
        this.accountId = accountId;
    }
<p>
The account ID of the member account to try to enable.
</p>
<p>
The account must be an invited member account with a status of <code>ACCEPTED_BUT_DISABLED</code>.
</p>

@param accountId
       The account ID of the member account to try to enable.</p>
       <p>
       The account must be an invited member account with a status of <code>ACCEPTED_BUT_DISABLED</code>.
aws-java-sdk-detective/src/main/java/com/amazonaws/services/detective/model/StartMonitoringMemberRequest.java