/// <summary>
/// Add a new element to the HashTable.
/// </summary>
/// <param name="commandInfo"><see cref="CommandInfo"/> to be added.</param>
private void add(CommandInfo commandInfo)
{
int index = hashFunction(commandName: commandInfo.getName());
if (array[index] != null) {
index = collisionHandler(index: index);
}
array[index] = commandInfo;
}
