def setupCentral(self):
'''Setup empty window supporting tabs at startup. '''
self.central = QtGui.QTabWidget()
self.central.setTabBar(CustomTabBar())
self.central.setTabsClosable(True)
self.central.tabCloseRequested.connect(self.tabCloseRequestedHandler)
self.central.currentChanged.connect(self.currentTabChanged)
self.setCentralWidget(self.central)
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