code: public static String removePrefix(String value, String prefix) {
  		if (value == null || prefix == null || prefix.length() > value.length()) {
  			return value;
  		}
  
  		return value.startsWith(prefix) ? value.substring(prefix.length()) : value;
  	}
docs: Remove string prefix if and only if string value starts with
  the prefix, otherwise original string is returned.
  
  @param value String value.
  @param prefix String prefix.
  @return New string.