code: def build_metagraph_list(self):
          
          ops = []
  
          self.ignore_unknown_dtypes = True
          for key in sorted(self.meta_params):
              value = self.convert_data_to_string(self.meta_params[key])
  
              if len(value) == 0:
                  continue
              if isinstance(value, str):
                  ops.append(tf.contrib.summary.generic(name=key, tensor=tf.convert_to_tensor(str(value))))
              else:
                  ops.append(tf.contrib.summary.generic(name=key, tensor=tf.as_string(tf.convert_to_tensor(value))))
  
          return ops
docs: Convert MetaParams into TF Summary Format and create summary_op.
  
          Returns:
              Merged TF Op for TEXT summary elements, should only be executed once to reduce data duplication.