syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"base.metadata.description"}]}
source_snippet:             base.metadata.description = metadata.description;
context_before:         if let Some(metadata) = json.metadata {
context_after:             base.metadata.tier = metadata.tier.filter(|tier| (1..=3).contains(tier));