Unit or Time line js file not available in trail downloaded package

I have downloaded trial pro version of scheduler however the following file or folder not available in codebase folder.

Not able to see the following files in downloaded package
 agenda: “ext/dhtmlxscheduler_agenda_view.js”,

    grid: “ext/dhtmlxscheduler_grid_view.js”,

    map: “ext/dhtmlxscheduler_map_view.js”,

    unit: “ext/dhtmlxscheduler_units.js”,

    timeline: “ext/dhtmlxscheduler_timeline.js, ext/dhtmlxscheduler_treetimeline.js, ext/dhtmlxscheduler_daytimeline.js”,

    week_agenda: “ext/dhtmlxscheduler_week_agenda.js”,

    year: “ext/dhtmlxscheduler_year_view.js”,

    limit: “ext/dhtmlxscheduler_limit.js”