class_docstr: Metric base class.
class_docstr_tok: ["Metric","base","class","."]
docstr: Returns the current value of the metric.
docstr_tok: ["Returns","the","current","value","of","the","metric","."]
code: def value(self):
      """Returns the current value of the metric."""
  
imports: import abc
  from typing import Optional
  from sonnet.src import base
  from sonnet.src import once
  import tensorflow
label_desc: Use image node_id 3 for calling the Metric obj's underlying member method code with example usage: obj.value() without return types