Complete the Java code to replace all occurrences of a specific word (case-insensitive) in a string. public class RegexReplacer {     public String replaceWord(String text, String wordToReplace, String replacement) {         // Example: text="Hello World", wordToReplace="world", replacement="Java"         // Expected: "Hello Java"         String regex = "(?i)\\b" + Pattern.quote(wordToReplace) + "\\b";         _________ // Line to complete     } }