public void setInstanceIds(java.util.Collection<String> instanceIds) {
        if (instanceIds == null) {
            this.instanceIds = null;
            return;
        }

        this.instanceIds = new com.amazonaws.internal.SdkInternalList<String>(instanceIds);
    }
<p>
The managed node IDs against which this command was requested.
</p>

@param instanceIds
       The managed node IDs against which this command was requested.
aws-java-sdk-ssm/src/main/java/com/amazonaws/services/simplesystemsmanagement/model/Command.java