public static DWARFAccessibility find(Number key) { 
		DWARFAccessibility access = valueMap.get(key.intValue());
		if(access != null)
			return access;
		throw new IllegalArgumentException("Invalid Integer value: " + key.toString());
	}
Find the accessibility value given a Number value.
@param key Number value to check
@return DWARFAccessibility enum if it exists
@throws IllegalArgumentException if the key is not found
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/DWARFAccessibility.java