/// <summary>
/// ONLY FOR REFLECTION. The invokation of this method will add the data field (Dimension or Metric) and key (Google Analytics field name) to the storage.
/// </summary>
/// <param name="fieldName"></param>
/// <param name="value"></param>
private void addTofieldsForMethodStorage(string fieldName, BaseField value)
{
if (!fieldsForMethodStorage.ContainsKey(fieldName))
{
fieldsForMethodStorage.Add(fieldName, value);
}
}