public boolean getSuperiorFullRelation(FunctionRecord superiorFunction,
			FidHashQuad inferiorFunction) throws IOException {
		long superiorKey =
			FidDBUtils.generateSuperiorFullHashSmash(superiorFunction, inferiorFunction);
		DBRecord record = superiorTable.getRecord(superiorKey);
		return (record != null);
	}
Return true if a relation exists, between a superior (caller) function and a
full hash representing the inferior (callee) function.
@param superiorFunction the caller function
@param inferiorFunction a hash representing 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