langchain/document_loaders/azure_blob_storage_file.py/AzureBlobStorageFileLoader/__init__
class AzureBlobStorageFileLoader:    def __init__(self, conn_str: str, container: str, blob_name: str):
        """Initialize with connection string, container and blob name."""
        self.conn_str = conn_str
        self.container = container
        self.blob = blob_name