This class represents the go-to-3D-view action. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 216, page 429.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 220, page 522.

System.Object
    WebSupergoo.ABCpdf14.Elements.Element
       WebSupergoo.ABCpdf14.Elements.ActionElement
          WebSupergoo.ABCpdf14.Elements.GoTo3DViewActionElement

A go-to-3D-view action activates a specific stored camera view within a 3D annotation. The TA entry references the annotation. The V entry identifies the target view by index, name, or one of the keywords First, Last, Next, or Prev.