public LongValue defineLong(String name) {
		checkDup(name);
		LongValue value = new LongValue(name, null, false);
		valuesMap.put(name, value);
		return value;
	}
Defines a value of type Long with an initial value.
@param name the name for this value
@return the new LongValue that was defined
Ghidra/Framework/Docking/src/main/java/docking/widgets/values/GValuesMap.java