The function looks for existing pads that aren't linked yet. It will request new pads if necessary. Such pads need to be released manualy when unlinking. If multiple links are possible, only one is established.
Make sure you have added your elements to a bin or pipeline with {@link Bin#add} or {@link Bin#addMany} before trying to link them. @param dest The {@link Element} containing the destination pad. @return true if the elements could be linked, false otherwise.
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