syntax_data: {"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":"self.register_place(ty,"}]}
source_snippet:                         self.register_place(ty, lhs, proj_elem.expect("child is not a projection"));
context_before:                     let lhs_child =
context_after:                     assignments.insert((lhs_child, rhs_child));