src/vs/workbench/contrib/terminal/browser/xterm/navigationModeAddon.ts/NavigationModeAddon/focusNextPage
class NavigationModeAddon:	focusNextPage(): void {
		if (!this._terminal?.buffer.active) {
			return;
		}
		this._navigationModeActiveContextKey.set(true);
		if (this._terminal.buffer.active.viewportY === this._terminal.buffer.active.baseY) {
			this._focusRow(this._terminal.rows - 1);
		} else {
			this._terminal.scrollLines(this._terminal.rows);
			this._focusLine('current');
		}
	}