Function rustpython_vm::compiler::parser::ast::fold::fold_stmt_function_def

pub fn fold_stmt_function_def<U, F>(
    folder: &mut F,
    node: StmtFunctionDef<U>
) -> Result<StmtFunctionDef<<F as Fold<U>>::TargetU>, <F as Fold<U>>::Error>where
    F: Fold<U> + ?Sized,