@Override
    @Nullable
    public String getFilename() {
        return StringUtils.getFilename(this.path);
    }
This implementation returns the name of the file that this class path
resource refers to.

see org.springframework.util.StringUtils#getFilename(String)
analyzer/src/main/java/nl/basjes/parse/useragent/utils/springframework/core/io/ClassPathResource.java