public async Task <Hashtable> PutAsync(String uri, String data, Dictionary <String, String> parameters) => await this.PutAsync(uri, (Hashtable)JSON.JsonDecode(data), parameters);
public async Task <Hashtable> UpdatePreferenceAsync(String id, String preference) => await this.UpdatePreferenceAsync(id, (Hashtable)JSON.JsonDecode(preference));
public async Task <Hashtable> CreatePreapprovalPaymentAsync(String preapprovalPayment) => await this.CreatePreapprovalPaymentAsync((Hashtable)JSON.JsonDecode(preapprovalPayment));
public async Task <Hashtable> CreatePreferenceAsync(String preference) => await this.CreatePreferenceAsync((Hashtable)JSON.JsonDecode(preference));