dart:developer
 Metric class 
  Abstract Metric class. Metric names must be unique, are hierarchical, and use periods as separators. For example, 'a.b.c'. Uniqueness is only enforced when a Metric is registered. The name of a metric cannot contain the slash ('/') character.
    - Implementers
   
   Constructors
  -  Metric(String name,  String description) 
   
   Properties
  -  description → String 
final
  -  description of this metric.  
  -  name → String 
final
  -  name of this metric.  
  -  hashCode → int 
read-only, inherited
  -  The hash code for this object. [...]  
  -  runtimeType → Type 
read-only, inherited
  -  A representation of the runtime type of the object.  
  
   Methods
  -  noSuchMethod(Invocation invocation) → dynamic  
inherited
  -  Invoked when a non-existent method or property is accessed. [...]  
  -  toString() → String  
inherited
  -  Returns a string representation of this object.  
  
   Operators
  -  operator ==(dynamic other) → bool  
inherited
  -  The equality operator. [...]