/// <summary>Adds a new <c>&lt;SIF_Element&gt;</c> child element.</summary>
 /// <param name="val">A SIF_Element object</param>
 /// <remarks>
 /// <para>The SIF specification defines the meaning of this element as: "Individual elements/attributes being requested of matching object.  See syntax below. If specified, only the elements/attributes requested are returned in the SIF_Response (with any parent elements/attributes); otherwise, all elements supported by the provider's object are returned."</para>
 /// <para>Version: 2.5</para>
 /// <para>Since: 1.1</para>
 /// </remarks>
 public void AddSIF_Element( SIF_Element val )
 {
     AddChild( InfraDTD.SIF_QUERYOBJECT_SIF_ELEMENT, val );
 }
 /// <summary>
 /// Sets all SIF_Element object instances. All existing 
 /// <c>SIF_Element</c> instances 
 /// are removed and replaced with this list. Calling this method with the 
 /// parameter value set to null removes all <c>SIF_Elements</c>.
 /// </summary>
 /// <remarks>
 /// <para>Version: 2.5</para>
 /// <para>Since: 1.1</para>
 /// </remarks>
 public void SetSIF_Elements( SIF_Element[] items)
 {
     SetChildren( InfraDTD.SIF_QUERYOBJECT_SIF_ELEMENT, items );
 }
 /// <summary>Adds a new <c>&lt;SIF_Element&gt;</c> child element.</summary>
 /// <param name="val">A SIF_Element object</param>
 /// <remarks>
 /// <para>The SIF specification defines the meaning of this element as: "Individual elements/attributes being requested of matching object.  See syntax below. If specified, only the elements/attributes requested are returned in the SIF_Response (with any parent elements/attributes); otherwise, all elements supported by the provider's object are returned."</para>
 /// <para>Version: 2.6</para>
 /// <para>Since: 1.1</para>
 /// </remarks>
 public void AddSIF_Element(SIF_Element val)
 {
     AddChild(InfraDTD.SIF_QUERYOBJECT_SIF_ELEMENT, val);
 }