* Get the value for the key 'rate.limit.retry.after.seconds'. <br>
     * The value is, e.g. 60 <br>
     * comment: Retry-After header value in seconds.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getRateLimitRetryAfterSeconds();

    /**
     * Get the value for the key 'rate.limit.retry.after.seconds' as {@link Integer}. <br>

ropdown-toggle),\n  > .btn.dropdown-toggle-split:first-child,\n  > .btn-group:not(:last-child) > .btn {\n    @include border-end-radius(0);\n  }\n\n  // The left radius should be 0 if the button is:\n  // - the \"third or more\" child\n  // - the second child and the previous element isn't `.btn-check` (making it the first child visually)\n  // - part of a btn-group which isn't the first child\n  > .btn:nth-child(n + 3),\n  > :not(.btn-check) + .btn,\n  > .btn-group:not(:first-child) > .btn {\n ...