#includeIn this example, the Blob class is used to store the string "hello world". The `init()` method is used to set the value of the Blob, and the `get()` method is used to retrieve its value. The package library that might contain the Blob class is Boost, a popular library used for C++. Boost provides a collection of libraries for common programming tasks, including data structures, algorithms, and utilities. The Blob class is part of the Boost library, specifically the Boost.Beast library, which provides support for networking and low-level protocols.#include "Blob.h" using namespace std; void main() { Blob blob; blob.init("hello world"); cout << blob.get() << endl; }