202         void popFront() {}  in popFront()  function
213         void popFront() {}  in popFront()  function
225         void popFront() {}  in popFront()  function
238         void popFront() {}  in popFront()  function
251         void popFront() {}  in popFront()  function
388     void popFront() @safe pure nothrow @nogc  in popFront()  function
752     void popFront() @safe pure nothrow @nogc  in popFront()  function
1094     void popFront() @safe pure nothrow @nogc  in popFront()  function
2397     void popFront()  in popFront()  function
2725     void popFront()  in popFront()  function
3029         void popFront() pure nothrow { r.popFront(); }  in popFront()  function