syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"p.projs.push(ProjectionElem::Field(field,"}]}
source_snippet:                         p.projs.push(ProjectionElem::Field(field, ()));
context_before:                         p.projs.push(ProjectionElem::Downcast(Some(name), variant));
context_after:                     }