public void
addAll(Mnemonic source) {
	if (wordcase != source.wordcase)
		throw new IllegalArgumentException(source.description +
						   ": wordcases do not match");
	strings.putAll(source.strings);
	values.putAll(source.values);
}
Copies all mnemonics from one table into another.
@param val The numeric value
@param string The text string
@throws IllegalArgumentException The wordcases of the Mnemonics do not
match.
src/main/java/core/org/xbill/DNS/Mnemonic.java