public void addRequestHeader(CharSequence name) {
        ensureNotStarted();
        requireNonNull(name, "name");
        configureExporter(builder -> builder.requestHeader(name));
    }
Adds the specified HTTP request header name to the export list.
logback/logback12/src/main/java/com/linecorp/armeria/common/logback/RequestContextExportingAppender.java