private static String getFillerStructQ7() {
		String expected =
		//@formatter:off
			"""
			/Q7NS::Q7
			pack()
			Structure Q7NS::Q7 {
			   0   Q7NS::Q7   24      "Self Base"
			   24   char[32]   32      "Filler for 2 Unplaceable Virtual Bases: P1NS::P1; P2NS::P2"
			}
			Length: 56 Alignment: 8
			/Q7NS::Q7/!internal/Q7NS::Q7
			pack()
			Structure Q7NS::Q7 {
			   0   pointer   8   {vfptr}   ""
			   8   pointer   8   {vbptr}   ""
			   16   int   4   q7   ""
			}
			Length: 24 Alignment: 8""";
		//@formatter:on
		return expected;
	}
Class to create the vftm 64-bit program and mock PDB
Ghidra/Features/PDB/src/test/java/ghidra/app/util/pdb/Vftm64ProgramCreator.java