public final WorkbenchBuilder toolbarLeft(ToolbarItem... toolbarControlsLeft) {
            this.toolbarControlsLeft = toolbarControlsLeft;
            return this;
        }
Defines the Controls which are placed on top-left of the Toolbar.

@param toolbarControlsLeft the {@link ToolbarItem}s which will be added to the Toolbar
@return the updated {@link WorkbenchBuilder}
workbenchfx-core/src/main/java/com/dlsc/workbenchfx/Workbench.java