public void cacheExecutableByRow(ExecutableRecord erec, RowKey rowKey) {
		if (rowCache == null) {
			rowCache = new TreeMap<>();
		}
		rowCache.put(rowKey, erec);
	}
Create an internal map entry from a database id to an executable
@param erec is the ExecutableRecord
@param rowKey is the database (row) id
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/description/DescriptionManager.java