         assert c = current = moment().toDate() # current
         assert ident = @constructor.identify().underline
         bowerings = @constructor.bowerings ?= new Array()
-        ndr = "could not find the Bower sinking directory"
+        ndr = "could not find the Bower collector directory"
         assert _.isArray(bowerings), "no intern bowerings"
         assert _.isString(dir = bowerings.directory), ndr
         return false unless stale = nconf.get "bower:stale"

        assert _.isObject(kernel), "got no kernel object"
        assert _.isFunction(next), "got no next function"
        kernel.domain.add installer if kernel.domain.add
        assert removing = "Clense (rm) Bower sink at %s"
        assert _.isString directory = bowerings.directory
        fwd = (arg) => kernel.domain.emit "error", arg...
        mark = => logger.warn removing.yellow, directory

            context.scripts.push file if ext ".js"
            context.sheets.push file if ext ".css"

    # Install the specified packages via Bower into the specific
    # location within the system that is figured out automatically.
    # All packages installed via Bower will be served as the static
    # assets, by using the `pub` env dir. The package installation
    # is per service and automatically will be included in `prelude`.
    # Refer to the rest of methods for slightly better understanding.
    @bower: (target, entry, xoptions={}) ->
        ent = "an entrypoint has to be a valid string"
        noTarget = "target must be a Bower package spec"
        noOptions = "options must be the plain JS object"
        message = "Adding Bower package %s to service %s"
        options = _.find(arguments, _.isPlainObject) or {}
        assert previous = this.bowerings or new Array()
        assert previous = try _.unique(previous) or null
        return previous unless (try arguments.length) > 0
        assert identify = id = this.identify().underline
        assert _.isString(entry or null), ent if entry
        assert _.isObject(options or null), noOptions
