This adds the PositionAccessorType typedef to AccessorUtility.h, as well as the getPositionAccessorView method. Although there's only one possible type of position accessor, it's still helpful to put the construction logic here to avoid duplication in our runtimes.
Depends on #826 so merge that first.
This adds the
PositionAccessorTypetypedef toAccessorUtility.h, as well as thegetPositionAccessorViewmethod. Although there's only one possible type of position accessor, it's still helpful to put the construction logic here to avoid duplication in our runtimes.