message: Add missing UHDM namespace in test.
diff: #include "gmock/gmock.h"
  #include "vpi_visitor.h"
  +using namespace UHDM;
  +
  class MockFileContent : public SURELOG::FileContent {
  public:
  MockFileContent() : FileContent(0, nullptr, nullptr, nullptr, nullptr, 0){};
  @@ -66,7 +68,9 @@ UHDM::Serializer sharedSerializer;
  class MockCompileDesign : public SURELOG::CompileDesign {
  public:
  MockCompileDesign() : CompileDesign(nullptr) {}
  - virtual UHDM::Serializer& getSerializer() {return sharedSerializer;}
  + virtual UHDM::Serializer& getSerializer() override {
  + return sharedSerializer;
  + }
  };
  // Need this to get serializer for VpiName, VpiValue etc.
  MockCompileDesign cd;
  