InInput
The top of a typical SpacException's spacTrace, representing whichever raw input caused the parser to throw.
If the input is an instance of HasLocation, the location will be displayed as part of the render of this element.
XmlEvent and JsonEvent (from xml-spac and json-spac respectively) both extend HasLocation,
trait Serializable
trait Product
trait Equals
trait SpacTraceElement
class Object
trait Matchable
class Any