Component (JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus); if (value instanceof PsiVariable psiVariable) { final String text = PsiFormatUtil.formatVariable(psiVariable, PsiFormatUtilBase.SHOW_NAME | PsiFormatUtilBase.SHOW_TYPE, PsiSubstitutor.EMPTY); setIcon(psiVariable.getIcon(0)); setText(text); } else if (value instanceof @NlsSafe String s) { setText(s); } return this; }