code: def get_mutations_size(self):
          
  
          mutation_size = 0
          for mutation in self._get_mutations():
              mutation_size += mutation.ByteSize()
  
          return mutation_size
docs: Gets the total mutations size for current row
  
          For example:
  
          .. literalinclude:: snippets_table.py
              :start-after: [START bigtable_row_get_mutations_size]
              :end-before: [END bigtable_row_get_mutations_size]