@Override
	public DataType getRowDataType() {
		StructureDataType rowDt = new StructureDataType(new CategoryPath(PATH), "AssemblyRefProcessor Row", 0);
		rowDt.add(DWORD, "Processor", null);
		rowDt.add(metadataStream.getTableIndexDataType(CliTypeTable.AssemblyRef), "AssemblyRef", "index into AssemblyRef table");
		return rowDt;
	}
Describes the AssemblyRefProcessor table. Apparently it is ignored by the CLI and shouldn't be present in an assembly.
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/pe/cli/tables/CliTableAssemblyRefProcessor.java