public void setMnemonic(Character newMnemonic) {
		MenuData oldData = cloneData();
		mnemonic = newMnemonic;
		firePropertyChanged(oldData);
	}
See the description in {@link #getParentMenuGroup()}

@param newParentMenuGroup the parent group
Ghidra/Framework/Docking/src/main/java/docking/action/MenuData.java