Address review comment

csharp/ql/lib/semmle/code/csharp/ExprOrStmtParent.qll

@@ -66,7 +66,7 @@ private ControlFlowElement getBody(Callable c) {
 }
 
 pragma[nomagic]
-private Location getASourceLocation(Element e) {
+private SourceLocation getASourceLocation(Element e) {
   result = e.getALocation().(SourceLocation) and
   not exists(e.getALocation().(SourceLocation).getMappedLocation())
   or

csharp/ql/lib/semmle/code/csharp/Location.qll

@@ -63,7 +63,7 @@ class EmptyLocation extends Location {
  */
 class SourceLocation extends Location, @location_default {
   /** Gets the location that takes into account `#line` directives, if any. */
-  Location getMappedLocation() {
+  SourceLocation getMappedLocation() {
     locations_mapped(this, result) and
     not exists(LineDirective l | l.getALocation() = this)
   }