code: func (sb SizeBuilder) In(right OperandBuilder, other ...OperandBuilder) ConditionBuilder {
  	return In(sb, right, other...)
  }
docs: // In returns a ConditionBuilder representing the result of the IN function
  // in DynamoDB Condition Expressions. The resulting ConditionBuilder can be used
  // as a part of other Condition Expressions or as an argument to the
  // WithCondition() method for the Builder struct.
  //
  // Example:
  //
  //     // condition represents the condition where the size of the item
  //     // attribute "Donuts" is checked against the list of numbers 12, 24, and
  //     // 36.
  //     condition := expression.Size(expression.Name("Donuts")).In(expression.Value(12), expression.Value(24), expression.Value(36))
  //
  //     // Used in another Condition Expression
  //     anotherCondition := expression.Not(condition)
  //     // Used to make an Builder
  //     builder := expression.NewBuilder().WithCondition(condition)
  //
  // Expression Equivalent:
  //
  //     expression.Size(expression.Name("Donuts")).In(expression.Value(12), expression.Value(24), expression.Value(36))
  //     // Let :dozen, :twoDozen, :threeDozen be ExpressionAttributeValues
  //     // representing the values 12, 24, and 36 respectively
  //     "size (Donuts) IN (12, 24, 36)"