# RelationQuery.expression

- **Module:** RelationQuery
- **Package:** libtmux-swift
- **Language:** Swift
- **Kind:** property
- **Source:** https://github.com/libtmux/libtmux-swift/blob/254f8b2be7eb60cacc3ffcb3ea8e456784f582df/Sources/LibTmux/Snapshot.swift#L295
- **Page:** https://libtmux.org/en/swift/latest/reference/relationquery-expression/

What each related object is tested against.