code: def bootstrap_methods(self) -> BootstrapMethod:
          
          bootstrap = self.attributes.find_one(name='BootstrapMethods')
  
          if bootstrap is None:
              bootstrap = self.attributes.create(
                  ATTRIBUTE_CLASSES['BootstrapMethods']
              )
  
          return bootstrap.table
docs: Returns the bootstrap methods table from the BootstrapMethods attribute,
          if one exists. If it does not, one will be created.
  
          :returns: Table of `BootstrapMethod` objects.