private static void appendClassSignature(final StringBuilder builder, final DartClass dartClass) { if (dartClass.isEnum()) { builder.append("enum <b>").append(dartClass.getName()).append("</b>"); return; } if (dartClass.isAbstract()) { builder.append("abstract "); } builder.append("class <b>").append(dartClass.getName()).append("</b>"); appendTypeParams(builder, dartClass.getTypeParameters()); final List<DartType> mixins = dartClass.getMixinsList(); final DartType superClass = dartClass.getSuperClass(); if (superClass != null) { builder.append(" extends ").append(StringUtil.escapeXml(superClass.getText())); } if (!mixins.isEmpty()) { builder.append(" with "); appendDartTypeList(builder, mixins); } final List<DartType> implementsList = dartClass.getImplementsList(); if (!implementsList.isEmpty()) { builder.append(" implements "); appendDartTypeList(builder, implementsList); } }