# KlaviyoAPI::SegmentDefinition ## Properties | Name | Type | Description | Notes | | ---- | ---- | ----------- | ----- | | **condition_groups** | [**Array<ConditionGroup>**](ConditionGroup.md) | | | ## Example ```ruby require 'klaviyo-api-sdk' instance = KlaviyoAPI::SegmentDefinition.new( condition_groups: null ) ```