class GraphQL::Relay::Mutation::Result

It delegates field lookups to the hash returned from ‘resolve`.
Use this when the mutation’s return type was generated from ‘return_field`s.

def self.define_subclass(mutation_defn) 

def self.define_subclass(mutation_defn)
  subclass = Class.new(self) do
    attr_accessor(*mutation_defn.return_type.all_fields.map(&:name))
    self.mutation = mutation_defn
  end
  subclass
end

def initialize(client_mutation_id:, result:) 

def initialize(client_mutation_id:, result:)
  @client_mutation_id = client_mutation_id
  result && result.each do |key, value|
    self.public_send("#{key}=", value)
  end
end