public boolean hasValue(String name) {
		AbstractValue<?> abstractValue = valuesMap.get(name);
		if (abstractValue == null) {
			throw new IllegalArgumentException("No value defined for " + name);
		}
		return abstractValue.hasValue();
	}
Returns true if the value defined for the given name has a non-null value.
@param name the name of the value
@return true if the value defined for the given name has a non-null value.
Ghidra/Framework/Docking/src/main/java/docking/widgets/values/GValuesMap.java