question: private static String prependIfMissing ( final String str , final CharSequence prefix , final boolean ignoreCase , final CharSequence ... prefixes ) { if ( str == null || isEmpty ( prefix ) || startsWith ( str , prefix , ignoreCase ) ) { return str ; } if ( prefixes != null && prefixes . length > 0 ) { for ( final CharSequence p : prefixes ) { if ( startsWith ( str , p , ignoreCase ) ) { return str ; } } } return prefix . toString ( ) + str ; }
target:  Prepends the prefix to the start of the string if the string does not already start with any of the prefixes.