code: public void print(final PrintStream out, final ICodingAnnotationStudy study,
  			final ICodingAnnotationItem item) {
  		Map<Object, Map<Object, Double>> coincidence = 
  				CodingAnnotationStudy.countCategoryCoincidence(item);
  		doPrint(out, study, coincidence);
  	}
docs: Print the coincidence matrix for the given annotation item.