Constructs a ReadConcern from the read concern level.
StaticAVAILABLEStaticLINEARIZABLEStaticMAJORITYStaticSNAPSHOTStaticfromConstruct a ReadConcern given an options object.
Optionaloptions: { The options object from which to extract the write concern.
Optionallevel?: ReadConcernLevelOptionalread
The MongoDB ReadConcern, which allows for control of the consistency and isolation properties of the data read from replica sets and replica set shards.
See
https://www.mongodb.com/docs/manual/reference/read-concern/index.html