public static boolean isLocalVarSig(CliBlob blob) throws IOException {
		return blob.getContentsReader().readNextByte() == CLISIGLOCALVAR_PROLOG;
	}
Checks whether this could *possibly* be a LocalVarSig. Only looks at the identifier byte. Useful for signature index
that could be to different kinds of signatures.
@param blob
@return
@throws IOException
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/pe/cli/blobs/CliSigLocalVar.java