Disable the default "Start my camera" button for rtc WebcamPublisher

Hello,
I notice in the samples that WebCamera displays the cam. Is there an easy way of disabling the "Start my camera" button? I wish to control this from the app itself.
<rtc:WebCamera width="65%" height="396" id="webCamPub"/>
I notice in the WebCamera sample that it achieves removing the default "Start my camera" button, by assigning the rtc Webcamera a width and height of 1 and manipulating these through WebCamPublisher class, but I do not see anywhere a "button" = disabled or something similar .

Ok thanks, overriding the addStartStopBtn function fortunately was a piece of cake for the WebCamera class, and that was all I needed.
I notice WebCamera is extremely advanced compared to the simpler webcamsuvscriber stuff.
I try to build on adobe grown material so I can avoid high maintenance costs down the road

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