/// <summary>
/// Checks for the provided <code>sap.ui.ux3.NavigationItem</code> in the aggregation {@link #getFacets facets}. and returns its index if found or -1 otherwise.
/// </summary>
/// <param name="oFacet">The facet whose index is looked for</param>
/// <returns>The index of the provided control in the aggregation if found, or -1 otherwise</returns>
public extern virtual int indexOfFacet(sap.ui.ux3.NavigationItem oFacet);
/// <summary>
/// Inserts a facet into the aggregation {@link #getFacets facets}.
/// </summary>
/// <param name="oFacet">The facet to insert; if empty, nothing is inserted</param>
/// <param name="iIndex">The <code>0</code>-based index the facet should be inserted at; for a negative value of <code>iIndex</code>, the facet is inserted at position 0; for a value greater than the current size of the aggregation, the facet is inserted at the last position</param>
/// <returns>Reference to <code>this</code> in order to allow method chaining</returns>
public extern virtual sap.ui.ux3.ThingViewer insertFacet(sap.ui.ux3.NavigationItem oFacet, int iIndex);
/// <summary>
/// Adds some facet to the aggregation {@link #getFacets facets}.
/// </summary>
/// <param name="oFacet">The facet to add; if empty, nothing is inserted</param>
/// <returns>Reference to <code>this</code> in order to allow method chaining</returns>
public extern virtual sap.ui.ux3.ThingViewer addFacet(sap.ui.ux3.NavigationItem oFacet);
/// <summary>
/// Checks for the provided <code>sap.ui.ux3.NavigationItem</code> in the aggregation {@link #getItems items}. and returns its index if found or -1 otherwise.
/// </summary>
/// <param name="oItem">The item whose index is looked for</param>
/// <returns>The index of the provided control in the aggregation if found, or -1 otherwise</returns>
public extern virtual int indexOfItem(sap.ui.ux3.NavigationItem oItem);
/// <summary>
/// Adds some item to the aggregation {@link #getItems items}.
/// </summary>
/// <param name="oItem">The item to add; if empty, nothing is inserted</param>
/// <returns>Reference to <code>this</code> in order to allow method chaining</returns>
public extern virtual sap.ui.ux3.NavigationBar addItem(sap.ui.ux3.NavigationItem oItem);
/// <summary>
/// Inserts a item into the aggregation {@link #getItems items}.
/// </summary>
/// <param name="oItem">The item to insert; if empty, nothing is inserted</param>
/// <param name="iIndex">The <code>0</code>-based index the item should be inserted at; for a negative value of <code>iIndex</code>, the item is inserted at position 0; for a value greater than the current size of the aggregation, the item is inserted at the last position</param>
/// <returns>Reference to <code>this</code> in order to allow method chaining</returns>
public extern virtual sap.ui.ux3.NavigationBar insertItem(sap.ui.ux3.NavigationItem oItem, int iIndex);
/// <summary>
/// Adds some subItem to the aggregation {@link #getSubItems subItems}.
/// </summary>
/// <param name="oSubItem">The subItem to add; if empty, nothing is inserted</param>
/// <returns>Reference to <code>this</code> in order to allow method chaining</returns>
public extern virtual sap.ui.ux3.NavigationItem addSubItem(sap.ui.ux3.NavigationItem oSubItem);
/// <summary>
/// Inserts a subItem into the aggregation {@link #getSubItems subItems}.
/// </summary>
/// <param name="oSubItem">The subItem to insert; if empty, nothing is inserted</param>
/// <param name="iIndex">The <code>0</code>-based index the subItem should be inserted at; for a negative value of <code>iIndex</code>, the subItem is inserted at position 0; for a value greater than the current size of the aggregation, the subItem is inserted at the last position</param>
/// <returns>Reference to <code>this</code> in order to allow method chaining</returns>
public extern virtual sap.ui.ux3.NavigationItem insertSubItem(sap.ui.ux3.NavigationItem oSubItem, int iIndex);
