[android-components](../../index.md) / [mozilla.components.lib.jexl.ast](../index.md) / [AstNode](index.md) / [expression](./expression.md)

# expression

`var expression: `[`AstNode`](index.md)`?` [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/lib/jexl/src/main/java/mozilla/components/lib/jexl/ast/AstNode.kt#L23)