{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"m_cast.ty"}]}
        m_cast.ty = fcx.try_structurally_resolve_type(self.cast_span, m_cast.ty);
        m_expr.ty = fcx.try_structurally_resolve_type(self.expr_span, m_expr.ty);