public File getFirstErrorFile() {
        if (!pipelineErrorDirectory.isDirectory()) {
            return null;
        }
        // We make the assumption that the directory only store error report and nothing else.
        File[] files = pipelineErrorDirectory.listFiles();
        if (files == null || files.length == 0) {
            return null;
        }
        // Return the first error report.
        return files[0];
    }
public File getFirstErrorFile ( ) { if ( ! pipelineErrorDirectory . isDirectory ( ) ) { return null ; } File [ ] files = pipelineErrorDirectory . listFiles ( ) ; if ( files == null || files . length == 0 ) { return null ; } return files [ 0 ] ; }
@return the first error file contained in the pipeline error's directory, {@literal null} if none. Notice that
the returned file may depend on the operating system.