Object
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Returns a hash, that will be turned into a JSON object and represent this object.
 
               # File json/lib/json/add/exception.rb, line 18
def as_json(*)
  {
    JSON.create_id => self.class.name,
    'm'            => message,
    'b'            => backtrace,
  }
end
             
            Stores class name (Exception) with message m and backtrace
array b as JSON string
 
               # File json/lib/json/add/exception.rb, line 28
def to_json(*args)
  as_json.to_json(*args)
end