callAsFunction(_:_:)

A shorthand for eliding the [+] index specifier.

BSON.ListEncoder.swift:72
mutating func callAsFunction<CodingKey>(_: CodingKey.Type = CodingKey.self, _ yield: (inout BSON.DocumentEncoder<CodingKey>) -> ()) where CodingKey : RawRepresentable, CodingKey.RawValue == String