where to use multiblocprovider code example

Example: multiblocprovider

MultiBlocProvider(
  providers: [
    BlocProvider(
      create: (BuildContext context) => BlocA(),
    ),
    BlocProvider(
      create: (BuildContext context) => BlocB(),
    ),
    BlocProvider(
      create: (BuildContext context) => BlocC(),
    ),
  ],
  child: ChildA(),
)