jodd-core/src/main/java/jodd/util/StringUtil.java
public static int lastIndexOfIgnoreCase(final String s, final String subS) {
		return lastIndexOfIgnoreCase(s, subS, s.length(), 0);
	}
public static int lastIndexOfIgnoreCase(final String s, final String subS) {
		return lastIndexOfIgnoreCase(s, subS, s.length(), 0);
	}
Finds last index of a substring in the given source string with ignored
case.

@param s      source string
@param subS   substring to find

@return last index of founded substring or -1 if substring is not found
@see #indexOfIgnoreCase(String, String, int)
@see #lastIndexOfIgnoreCase(String, String, int)