// tt \\\uuu00bro
// ken\\ua <- escaped backslash so not an unicode escape
// escape at the end 1 \
// escape at the end 2 \u
// escape at the end 3 \uu
// escape at the end 4 \uu1
// escape at the end 5 \uu12
// escape at the end 6 \uu123
// unicode escaped backslash does not escape next backslash -> \u005c\u
/*
in block comment
\u
\u000A <- correct escape
*/
/**
* in javadoc comment \u123
*/