docs: def _and_collapser(container: ShapeAnd, containee: shapeExpr) -> None:
          """ For various nefarious reaons, the reference parser has decided to implement
              And(And(a, b), c) --> And(a, b, c).  We've got to do the same
          """
          if isinstance(containee, ShapeAnd):
              for expr in containee.shapeExprs:
                  container.shapeExprs.append(expr)
          else:
              container.shapeExprs.append(containee)