static HeadersSanitizer<String> ofText() {
        return TextHeadersSanitizer.INSTANCE;
    }
Returns the default text {@link HeadersSanitizer} that masks
{@link HttpHeaderNames#AUTHORIZATION}, {@link HttpHeaderNames#COOKIE},
{@link HttpHeaderNames#SET_COOKIE}, and {@link HttpHeaderNames#PROXY_AUTHORIZATION} with {@code ****}.
core/src/main/java/com/linecorp/armeria/common/logging/HeadersSanitizer.java