.FluxTrainingAbstractMetric
	
abstract type defined in module 
	FluxTraining
			abstract type AbstractMetric
			Abstract type for metrics passed to 
	
			
			Metrics.
			For most use cases, you should use 
	
			
			Metric, the standard implementation.
			If 
	
			
			Metric doesn't fit your use case, you can create a new subtype of 
			AbstractMetric and implement the following methods to make it compatible with 
	
			
			Metrics:
			
	
			
			reset!
			(metric)
			
	
			
			step!
			(metric, learner)
			
	
			
			stepvalue
			(metric)
			
	
			
			epochvalue
			(metric)
			
	
			
			metricname
			(metric)