return BSON regular expressions as BSONRegExp instances.
the serializer will check if keys are valid.
Collation
Comment to apply to the operation.
In server versions pre-4.4, 'comment' must be string. A server error will be thrown if any other type is provided.
In server versions 4.4 and above, 'comment' can be any valid BSON type.
Enable utf8 validation when deserializing BSON documents. Defaults to true.
Specifies the verbosity mode for the explain output.
allow to specify if there what fields we wish to return as unserialized raw buffer.
serialize will not emit undefined fields (default:true)
when deserializing a Binary will return it as a node.js Buffer instance.
when deserializing a Long will fit it into a Number if it's smaller than 53 bits
when deserializing will promote BSON values to their Node.js closest equivalent types.
Return BSON filled buffers from operations
A default read concern for commands in this transaction
A default read preference for commands in this transaction
Should retry failed writes
serialize the javascript functions (default:false).
Specify ClientSession for this command
A default writeConcern for commands in this transaction
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Configuration options for a transaction.