awaitility/src/main/java/org/awaitility/reflect/WhiteboxImpl.java
public static void throwExceptionIfFieldWasNotFound(Class<?> type, String fieldName, Field field) {
        if (field == null) {
            throw new FieldNotFoundException("No field was found with name '" + fieldName + "' in class "
                    + type.getName() + ".");
        }
    }
public static void throwExceptionIfFieldWasNotFound(Class<?> type, String fieldName, Field field) {
        if (field == null) {
            throw new FieldNotFoundException("No field was found with name '" + fieldName + "' in class "
                    + type.getName() + ".");
        }
    }
Throw exception if field was not found.

@param type      the type
@param fieldName the field name
@param field     the field