code: public static void nestedBeanNull(String currentField, String destinationClass, String destinationField, String sourceClass, String sourceField, boolean safeNavigationOperator){
  		throw new NestedBeanNullException(MSG.INSTANCE.message(nestedBeanNullException,currentField,destinationClass,destinationField,sourceClass,sourceField), safeNavigationOperator);
  	}
docs: Thrown when the source field is null in a mapping of nested type.
  @param currentField current field
  @param destinationClass destination class
  @param destinationField destination field
  @param sourceClass source class
  @param sourceField source field