def eac3_surround_ex_mode=(eac3_surround_ex_mode)
      validator = EnumAttributeValidator.new('String', ["m0", "m1", "m2"])
      unless validator.valid?(eac3_surround_ex_mode)
        fail ArgumentError, "invalid value for 'eac3_surround_ex_mode', must be one of #{validator.allowable_values}."
      end
      @eac3_surround_ex_mode = eac3_surround_ex_mode
    end
def eac3_surround_ex_mode=(eac3_surround_ex_mode)
      validator = EnumAttributeValidator.new('String', ["m0", "m1", "m2"])
      unless validator.valid?(eac3_surround_ex_mode)
        fail ArgumentError, "invalid value for 'eac3_surround_ex_mode', must be one of #{validator.allowable_values}."
      end
      @eac3_surround_ex_mode = eac3_surround_ex_mode
    end
Custom attribute writer method checking allowed values (enum).
 @param [Object] eac3_surround_ex_mode Object to be assigned