### Question:
DMNGridHelper { public void focusGridPanel() { getGridPanel().setFocus(true); } @Inject  DMNGridHelper(final SessionManager sessionManager); void highlightCell(final int row,
                              final int column,
                              final GridWidget gridWidget); void focusGridPanel(); void clearSelections(); void clearCellHighlights(); Set<GridWidget> getGridWidgets();  }### Answer:
@Test public void testFocusGridPanel() { helper.focusGridPanel(); verify(gridPanel).setFocus(true); }