in sonar-plugin-server/src/main/java/jetbrains/buildserver/sonarplugin/tool/SonarQubeToolProvider.java [145:153]
private String checkDirectory(@NotNull final Path bundledTool, final String description) {
String error = checkCommon(bundledTool, description);
if (error != null) return error;
if (!Files.isDirectory(bundledTool)) {
return description + ": '" + bundledTool + "' is not a directory";
}
return null;
}