Set GCOVR exclusions for outside of implementation

VersionedMap.cpp

@@ -507,12 +507,27 @@ struct VersionedMap::Impl {
     mm.gc(roots.roots(), roots.rootCount(), oldestVersion);
   }
 
-  void printInOrder(int64_t version) {
+  void printInOrder(int64_t version);
+
+  void printInOrderHelper(int64_t version, uint32_t node);
+
+  MemManager mm;
+  RootSet roots;
+  // Only meaningful within the callstack of `addMutations`
+  uint32_t latestRoot;
+  int64_t latestVersion = 0;
+};
+
+// ==================== END IMPLEMENTATION ====================
+
+// GCOVR_EXCL_START
+
+void VersionedMap::Impl::printInOrder(int64_t version) {
   printInOrderHelper(version,
                      roots.getThreadSafeHandle().rootForVersion(version));
 }
 
-  void printInOrderHelper(int64_t version, uint32_t node) {
+void VersionedMap::Impl::printInOrderHelper(int64_t version, uint32_t node) {
   if (node == 0) {
     return;
   }
@@ -529,16 +544,10 @@ struct VersionedMap::Impl {
     printf(" <clearTo>");
   }
   printf("\n");
-    printInOrderHelper(version,
-                       child<std::memory_order_relaxed>(node, true, version));
+  VersionedMap::Impl::printInOrderHelper(
+      version, child<std::memory_order_relaxed>(node, true, version));
 }
 
-  MemManager mm;
-  RootSet roots;
-  // Only meaningful within the callstack of `addMutations`
-  uint32_t latestRoot;
-  int64_t latestVersion = 0;
-};
 } // namespace weaselab
 
 #ifdef ENABLE_MAIN
@@ -632,3 +641,5 @@ int main() {
   }
 }
 #endif
+
+// GCOVR_EXCL_STOP