{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"ProjectionElem::ConstantIndex"}]}
                    ProjectionElem::ConstantIndex { offset, min_length, from_end } => {
                    ProjectionElem::Field(f, ()) => ProjectionElem::Field(f, ty.ty),
                        ProjectionElem::ConstantIndex { offset, min_length, from_end }