/// <summary>
///
/// </summary>
/// <param name="keyVaultUrl">the url where the particular Key Vault instance can be accessed.
/// This value is not security sensitive and can be stored in a config file by the caller.</param>
/// <param name="azureADApplicationId">This identifier (typically a guid) represents an "application" that has been configured on a specific Key Vault.
/// This value is not security sensitive and can be stored in a config file by the caller.</param>
/// <param name="secretName">The string designating which secret you wish to retrieve (so as to inspect the secret value).
/// This value is not security sensitive and can be stored in a config file by the caller.</param>
/// <param name="credentialProvider">a class implementing the sample ICredentialProvider interface. The caller provides
/// the particular implementation in which they have loaded the UserCredential object they got from somewhere.</param>
/// <returns></returns>
private async Task <string> GetAzureServiceBusConnectionStringAsync(string keyVaultUrl, string azureADApplicationId, string secretName,
ICredentialProvider credentialProvider)
{
_azureADApplicationId = azureADApplicationId;
//Get UserCredential needed to talk to Azure Key Vault to ask for the connection string
_userCredential = credentialProvider.GetUserCredential();
KeyVaultClient keyVaultClient = GetKeyVaultClient();
var secret = await keyVaultClient.GetSecretAsync(keyVaultUrl, secretName);
string connectionString = secret.Value;
return(connectionString);
}