I need help, as in I am not able to get the meaning of the class WaveformMark, in the src/waveform/renders/waveformmark.h, i got that it has something to do with the marker of the waveforms in the Mixxx, but moreover, I want to know that in the setup function of the class, why is that the item, is compared if its empty or not, i checked that it is converting the QDomNode object and the "Control" string to the string, then how it can be null, it can be possible if in the function of SkinContext::nodeToString in the file src/skin/skincontext.cpp, the child is initially Null, so a null tree was formed, which i think is the case with the code, as in setup function, context object calls selectString and selectString calls nodeToString, so i need clearity here.
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