public String mapDesc(String desc) {
		Type t = Type.getType(desc);
		switch (t.getSort()) {
		case Type.ARRAY:
			String s = mapDesc(t.getElementType().getDescriptor());
			for (int i = 0; i < t.getDimensions(); ++i) {
				s = '[' + s;
			}
			return s;
		case Type.OBJECT:
			String newType = map(t.getInternalName());
			if (newType != null) {
				return 'L' + newType + ';';
			}
		}
		return desc;
	}