{"ast_node_type":"function","tokens":[{"end":98,"kind":"keyword","start":0,"text":"fn"}]}
    fn from_iter<T: IntoIterator<Item = (CrateBuilderId, ProcMacroLoadResult)>>(iter: T) -> Self {
impl FromIterator<(CrateBuilderId, ProcMacroLoadResult)> for ProcMacrosBuilder {
        let mut builder = ProcMacrosBuilder::default();