@Override
	public String toString() {
		return "From: " + fromAddr + " To: " + toAddr + " Type: " + refType + " Op: " + opIndex +
			" " + sourceType.toString();
	}
Return a string that represents this references, for debugging purposes.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/references/ReferenceDB.java