`initialize()` retrieve user

[RemyMachado]

I would like to store the authenticated user in the context, in order for each method of the DataSource to directly access it, but I think it may be an antipattern. I'm not even sure async initialize() is allowed.

async initialize(config: DataSourceConfig<GraphQLContext>) {
        super.initialize?.(config)

        const user = await this.findBearerUser()
        this.context.user = user
}

This would allow the following (no need for user fetching):

async findOneById(id) {
        if (!this.context.user) throw new Error('Unauthenticated.')
        // ...
}

Instead of fetching the user for every method:

async findOneById(id) {
        const user = await this.findBearerUser()
        if (!user) throw new Error('Unauthenticated.')
        // ...
}

What's the best way to achieve the desired behavior?
Are we constrained to fetch the user on every method?