publicstaticintB_LoadFile(ILuaState lua){stringfname = lua.L_OptString(1,null);stringmode = lua.L_OptString(2,null);boolenv = ! lua.IsNone(3);varstatus = lua.L_LoadFileX( fname, mode );if( status != ThreadStatus.LUA_OK && env ) { lua.PushValue(3); lua.SetUpvalue(-2,1);/...