RowBuilder
Deprecated
Migration scaffold. Use com.facebook.litho.layout.flexbox.Row(...) for new construction. This alias only exists so files that also import the new Row function can keep calling Row.create(c).build() under the disambiguated name RowBuilder.create(c).build().
Migration scaffolding: a typealias for the legacy SpecGen Row class under a non-colliding name.
When migrating Kotlin call sites from the legacy ResourcesScope.Row { ... } DSL to the new com.facebook.litho.layout.flexbox.Row(...) { ... } function, any file that also constructs the legacy SpecGen Row via Row.create(c).build() hits a name collision: the new function and the legacy class share the simple name Row. Rewriting Row.create(c) to RowBuilder.create(c) (and switching the import to com.facebook.litho.RowBuilder) frees the Row name in the file for the new function.
Java callers are unaffected — typealiases are Kotlin-only and Java code keeps using com.facebook.litho.Row directly. The Java migration is handled separately in Phase 3 of the Row/Column migration plan.