Query.validateThemePreviewToken
Public: resolve an opaque preview token into the theme/page it grants access to. Returns null when the token is missing, expired, or revoked. Storefront uses this to swap `?preview_token=…` for an internal theme_id. NO AUTH — the token itself is the credential.
ReturnsThemePreviewToken
Signature
Public: resolve an opaque preview token into the theme/page it grants access to. Returns null when the token is missing, expired, or revoked. Storefront uses this to swap `?preview_token=…` for an internal theme_id. NO AUTH — the token itself is the credential.
tokenString!