settings method
Specifies custom settings to be used to configure the Firestore
instance. Can only be invoked once and before any other Firestore
method.
If settings are provided via both settings()
and the Firestore
constructor, both settings objects are merged and any settings provided
via settings()
take precedence.
@param {object} settings The settings to use for all Firestore operations.
Implementation
external void settings(Settings settings);