nl_tokens: Connection constructor .
pl_tokens: function Connection ( uri , options ) { var <mask> = this ; options || ( options = { } ) ; options . autoReconnect != null || ( options . autoReconnect = true ) ; // It's a Db instance. if ( uri . collection ) { this . db = uri ; } else { MongoClient . connect ( uri , options , function ( err , db ) { if ( err ) return self . emit ( 'error' , err ) ; self . db = db ; self . emit ( 'connect' , db ) ; db . on ( 'error' , function ( err ) { self . emit ( 'error' , err ) ; } ) ; } ) ; } this . destroyed = false ; this . channels = { } ; }