private static FunctionTagMappingAdapter findReadOnlyAdapter(DBHandle handle) {
		return new FunctionTagMappingAdapterNoTable(handle);
	}
Database adapter that maps function tags to individual functions. This table 
consists of two columns, each of which is an index into the {@link FunctionTagAdapter}
and {@link SymbolTable} respectively.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/function/FunctionTagMappingAdapter.java