public boolean getInferiorFullRelation(FidHashQuad superiorFunction,
			FunctionRecord inferiorFunction) throws IOException {
		long inferiorKey =
			FidDBUtils.generateInferiorFullHashSmash(superiorFunction, inferiorFunction);
		DBRecord record = inferiorTable.getRecord(inferiorKey);
		return (record != null);
	}
Returns true if a relation exists, between an inferior (callee) function and a
full hash representing the superior (caller) function.
@param superiorFunction a hash representing the caller function
@param inferiorFunction the callee function
@return true if the relation exists
@throws IOException if the database encounters an error seeking
Ghidra/Features/FunctionID/src/main/java/ghidra/feature/fid/db/RelationsTable.java