basic_static_string::append (1 of 9 overloads)

Appends count copies of character ch

BOOST_STATIC_STRING_CPP14_CONSTEXPR basic_static_string&
append(
    size_type count,
    value_type ch);

The appended characters may be null.

Type	Thrown On
`std::length_error`	if `count > max_size() - size()`

*this