def inherited(child_klass)
      inherited_config_klass = Class.new(@__qonfig_config_klass__)

      child_klass.instance_variable_set(:@__qonfig_definition_lock__, Mutex.new)
      child_klass.instance_variable_set(:@__qonfig_access_lock__, Mutex.new)
      child_klass.instance_variable_set(:@__qonfig_config_klass__, inherited_config_klass)
      child_klass.instance_variable_set(:@__qonfig_config__, nil)

      super
    end
def inherited(child_klass)
      inherited_config_klass = Class.new(@__qonfig_config_klass__)

      child_klass.instance_variable_set(:@__qonfig_definition_lock__, Mutex.new)
      child_klass.instance_variable_set(:@__qonfig_access_lock__, Mutex.new)
      child_klass.instance_variable_set(:@__qonfig_config_klass__, inherited_config_klass)
      child_klass.instance_variable_set(:@__qonfig_config__, nil)

      super
    end
@param child_klass [Class]
 @return [void]

 @api private
 @since 0.2.0