public ProcessDetails withUserId(Integer userId) {
        setUserId(userId);
        return this;
    }
<p>
The unique ID of the user that executed the process.
</p>

@param userId
       The unique ID of the user that executed the process.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-guardduty/src/main/java/com/amazonaws/services/guardduty/model/ProcessDetails.java