protected void addExecutable(ExecutableRecord exeRecord) throws LSHException {
		executableSet.transferExecutable(exeRecord);	// Transfer (re)sets xrefIndex to 0
	}
Register an executable for the scoring matrix
@param exeRecord is the ExecutableRecord to register
@throws LSHException if the executable was already registered
  with different metadata
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/client/ExecutableScorer.java