Quick fix for using bracket accessor instead of get/set on Map

TypeScript Version: 3.6.0-dev.20190814

Search Terms:

• quick fix
• code action
• getCodeFixes

Code
With strict: true:

class Foo {
    public readonly map = new Map<string, string>();

    constructor() {
        console.log(this.map['af123']);``
    }
}

This produces the error:

Element implicitly has an 'any' type because type 'Map<string, string>' has no index signature. Did you mean to call 'get' ?

Expected behavior:
The error message suggests a fix. We should should be a quick fix that changes the code to call .get

Actual behavior:
No quick fix returned.

Start by searching the TypeScript code-action implementation and getCodeFixes handling for the diagnostic shown in the issue. Reproduce the Map bracket-access example with strict mode, then verify that a quick fix is offered and changes the access to a get call.