code: def removeGaps(self) :
  		
  		
  		for i in range(1, len(self.children)) :
  			if self.children[i].x1 > self.children[i-1].x2:				
  				aux_moveTree(self.children[i-1].x2-self.children[i].x1, self.children[i])
docs: Remove all gaps between regions