6.4: Dropdowns Manual triggering example
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**Primary Actor**: User

**Scope**: Ngx-bootstrap DEMO / BS version 3&4

**Goal**: Show user example how to trigger dropdown with show, hide and toggle methods

Main success scenario:
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1. User opens Dropdowns demo page
2. User clicks on Manual triggering sub-menu
3. User see 4 clickable buttons: "Button dropdown", "Toggle", "Show", "Hide"
4. When user clicks on "Button dropdown", then dropdown opened and there are 3 items
5. When user clicks on any item, then dropdown closes
6. When user clicks on "Toggle", then dropdown opened and there are 3 items
7. When user clicks on "Toggle" again, then dropdown closes
8. When user clicks on "Show", then dropdown opened and there are 3 items
9. When user clicks on "Show" again, nothing happens
10. When user clicks on any item, nothing happens
11. When user clicks on "Hide", then dropdown closes
12. Template src should be implemented with dropdown.show, dropdown.hide and dropdown.toggle

Variations:
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2*. User scroll to Manual triggering sub-menu