in e2e-examples/gcs/benchmark/channel_creator.cc [26:35]
static std::string LoadStringFromFile(std::string path) {
std::ifstream file(path);
if (!file.is_open()) {
std::cout << "Failed to open " << path << std::endl;
abort();
}
std::stringstream sstr;
sstr << file.rdbuf();
return sstr.str();
}