ExMicrosoftAzureStorage.Storage.Blob.update_blob_properties

You're seeing just the function update_blob_properties, go back to ExMicrosoftAzureStorage.Storage.Blob module for more information.
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update_blob_properties(blob, blob_properties)

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Updates blob properties.

Similar to set_blob_properties/2 but keeps existing values by first performing get_blob_properties/2, merging the result and handing it over to set_blob_properties/2.