public AceCommandDescription withPassEvent(boolean passEvent) {
        this.passEvent = passEvent;
        return this;
    }
Chainable setter method for passEvent property.

@param passEvent in case it's true keyboard event will not be stopped
                 and will be passed to original listener after command execution
@return reference to this command description
stroom-core-client-widget/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceCommandDescription.java