public Symbol getSymbol(CoffRelocation relocation) throws RelocationException {
		Symbol symbol =
			symbolsMap.get(header.getSymbolAtIndex(relocation.getSymbolIndex()));
		if (symbol == null) {
			throw new RelocationException("missing required symbol");
		}
		return symbol;
	}
Get symbol required to process a relocation.  Method should only be invoked
when a symbol is required since some relocations may not require a symbol.
@param relocation relocation whose related symbol should be returned
@return relocation symbol
@throws RelocationException if symbol not found
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/coff/relocation/CoffRelocationContext.java