public static String getClassFileName(Class<?> clazz) {
        String className = clazz.getName();
        int lastDotIndex = className.lastIndexOf(PACKAGE_SEPARATOR);
        return className.substring(lastDotIndex + 1) + CLASS_FILE_SUFFIX;
    }
Determine the name of the class file, relative to the containing
package: e.g. "String.class"

@param clazz the class
@return the file name of the ".class" file
doc-swagger/src/main/java/com/alipay/sofa/rpc/doc/swagger/utils/LocalVariableTableParameterNameDiscoverer.java