/guava/android/guava/src/com/google/common/escape/Escapers.java
return checkNotNull( string) ;checkNotNull( escaper) ;
checkNotNull ( escaper ) ;
return replacementChars; } }; } } static UnicodeEscaper asUnicodeEscaper(Escaper escaper) { <extra_id_0> if (escaper instanceof UnicodeEscaper) { return (UnicodeEscaper) escaper; } else if (escaper instanceof CharEscaper) { return wrap((CharEscaper) escaper); } throw new IllegalArgumentException(