code: protected String getPropertyName(String propertyPath) {
  		int lastSeparator = getLastPropertySeparatorIndex(propertyPath);
  		if (lastSeparator == -1) {
  			return propertyPath;
  		}
  		if (propertyPath.charAt(lastSeparator) == PropertyAccessor.NESTED_PROPERTY_SEPARATOR_CHAR)
  			return propertyPath.substring(lastSeparator + 1);
  
  		return propertyPath.substring(lastSeparator);
  	}
docs: Extracts the property name from a propertyPath.