public virtual WriteConcernResult Update(
	IMongoQuery query,
	IMongoUpdate update,
	WriteConcern writeConcern
)

Public Overridable Function Update ( 
	query As IMongoQuery,
	update As IMongoUpdate,
	writeConcern As WriteConcern
) As WriteConcernResult

abstract Update : 
        query : IMongoQuery * 
        update : IMongoUpdate * 
        writeConcern : WriteConcern -> WriteConcernResult 
override Update : 
        query : IMongoQuery * 
        update : IMongoUpdate * 
        writeConcern : WriteConcern -> WriteConcernResult