original_docstring: 
      Construct a new JournalBlock object from an IonStruct.
  
      :type ion_value: :py:class:`amazon.ion.simple_types.IonSymbol`
      :param ion_value: The IonStruct returned by QLDB that represents a journal block.
  
      :rtype: :py:class:`pyqldbsamples.qldb.journal_block.JournalBlock`
      :return: The constructed JournalBlock object.
      
docstring: Construct a new JournalBlock object from an IonStruct.
docstring_tokens: Construct a new JournalBlock object from an IonStruct .
code: def from_ion(ion_value):
      """
      Construct a new JournalBlock object from an IonStruct.
  
      :type ion_value: :py:class:`amazon.ion.simple_types.IonSymbol`
      :param ion_value: The IonStruct returned by QLDB that represents a journal block.
  
      :rtype: :py:class:`pyqldbsamples.qldb.journal_block.JournalBlock`
      :return: The constructed JournalBlock object.
      """
      block_address = ion_value.get('blockAddress')
      transaction_id = ion_value.get('transactionId')
      block_timestamp = ion_value.get('blockTimestamp')
      block_hash = ion_value.get('blockHash')
      entries_hash = ion_value.get('entriesHash')
      previous_block_hash = ion_value.get('previousBlockHash')
      entries_hash_list = ion_value.get('entriesHashList')
      transaction_info = ion_value.get('transactionInfo')
      revisions = ion_value.get('revisions')
  
      journal_block = JournalBlock(block_address, transaction_id, block_timestamp, block_hash, entries_hash,
                                   previous_block_hash, entries_hash_list, transaction_info, revisions)
      return journal_block
code_tokens: def from_ion ( ion_value ) : block_address = ion_value . get ( 'blockAddress' ) transaction_id = ion_value . get ( 'transactionId' ) block_timestamp = ion_value . get ( 'blockTimestamp' ) block_hash = ion_value . get ( 'blockHash' ) entries_hash = ion_value . get ( 'entriesHash' ) previous_block_hash = ion_value . get ( 'previousBlockHash' ) entries_hash_list = ion_value . get ( 'entriesHashList' ) transaction_info = ion_value . get ( 'transactionInfo' ) revisions = ion_value . get ( 'revisions' ) journal_block = JournalBlock ( block_address , transaction_id , block_timestamp , block_hash , entries_hash , previous_block_hash , entries_hash_list , transaction_info , revisions ) return journal_block
short_docstring: Construct a new JournalBlock object from an IonStruct.
short_docstring_tokens: Construct a new JournalBlock object from an IonStruct .
comment: """
      Construct a new JournalBlock object from an IonStruct.
  
      :type ion_value: :py:class:`amazon.ion.simple_types.IonSymbol`
      :param ion_value: The IonStruct returned by QLDB that represents a journal block.
  
      :rtype: :py:class:`pyqldbsamples.qldb.journal_block.JournalBlock`
      :return: The constructed JournalBlock object.
      """