title: Fail to create dataset using azure sdk python for azure data factory
body: <p>I am trying to create dataset in ADF using azure sdk for python, unfortunately I am running into this error message. I am not sure what is wrong with my code below.</p>
  
  <pre><code>dsOut_name = 'POC_DatasetName'
  ds_ls ="AzureBlobStorage"
  output_blobpath = '/tempdir'
  df_name = 'pipeline1'
  dsOut_azure_blob = AzureBlobDataset(linked_service_name=ds_ls, folder_path=output_blobpath)
  dsOut = adf_client.datasets.create_or_update(rg_name, df_name, dsOut_name, dsOut_azure_blob)
  print_item(dsOut)
  </code></pre>
  
  <pre><code>Error Message: SerializationError: Unable to build a model: Unable to deserialize to object: type, AttributeError: 'str' object has no attribute 'get', DeserializationError: Unable to deserialize to object: type, AttributeError: 'str' object has no attribute 'get'
  </code></pre>
  
  <p>Help Please</p>