private static String getExpectedStructQ1() {
		String expected =
		//@formatter:off
			"""
			/Q1NS::Q1
			pack()
			Structure Q1NS::Q1 {
			   0   P1NS::P1   16      "Base"
			   16   P2NS::P2   16      "Base"
			   32   int   4   q1   ""
			}
			Length: 40 Alignment: 8
			/P1NS::P1
			pack()
			Structure P1NS::P1 {
			   0   pointer   8   {vfptr}   ""
			   8   int   4   p1   ""
			}
			Length: 16 Alignment: 8
			/P2NS::P2
			pack()
			Structure P2NS::P2 {
			   0   pointer   8   {vfptr}   ""
			   8   int   4   p2   ""
			}
			Length: 16 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