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

@param src        source string for examination
@param subS       substring to find
@param startIndex starting index from where search begins

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