how can i prevent uncrustify removing space between namespace "static class" and formatting it to staticclass?

Question

i am using qt beautifier uncrustify. Withouth namespace it doesnt remove space between "static class" but when i use it under namespace it removes space between formatting it to staticclass

namespace{
    static class myclass{
    .....}
}

to

namespace{
    staticclass myclass{
    .....}
}

how can i prevent it ?

i tried searcing fix in uncrustify documentation but i couldnt find any