@Override
	public StructureDataType getRowDataType() {
		StructureDataType rowDt = new StructureDataType(new CategoryPath(PATH), "TypeSpec Row", 0);
		rowDt.add(metadataStream.getBlobIndexDataType(), "Signature", "index into Blob heap");
		return rowDt;
	}
Describes the TypeSpec table. Each row represents a specification for a TypeDef or TypeRef which is contained in the Blob stream.
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/pe/cli/tables/CliTableTypeSpec.java