public long getLong(String propertyName, long defaultValue) {
		Pair<PropertyEntryType, String> pair = map.get(propertyName);
		if (pair == null || pair.first != PropertyEntryType.LONG_TYPE) {
			return defaultValue;
		}
		try {
			String value = pair.second;
			return Long.parseLong(value);
		}
		catch (NumberFormatException e) {
			return defaultValue;
		}
	}
Return the long value with the given propertyName.
@param propertyName name of property that is a long
@param defaultValue value to use if the property does not exist
@return long value
Ghidra/Framework/FileSystem/src/main/java/ghidra/util/PropertyFile.java