name
THe name of this collection.
The collection name must be unique within a single MongoDatabase (otherwise, the two instances refer to the same data).
The name should begin with a letter or an underscore (
_).The name cannot be empty.
The name cannot contain the null character nor the
$character.The name cannot being with
system..The name cannot contain
.system..It is recommended to avoid names longer than 171 bytes.