public Integer getPreviousImplementedVersion(Page page) {
        ContentEntityObject entityObject = getContentEntityManager().getById(page.getId());
        String value = getContentPropertyManager().getStringProperty(entityObject, PREVIOUS_IMPLEMENTED_VERSION);
        return value == null ? null : Integer.valueOf(value);
    }
public Integer getPreviousImplementedVersion ( Page page ) { ContentEntityObject entityObject = getContentEntityManager ( ) . getById ( page . getId ( ) ) ; String value = getContentPropertyManager ( ) . getStringProperty ( entityObject , PREVIOUS_IMPLEMENTED_VERSION ) ; return value == null ? null : Integer . valueOf ( value ) ; }
Retrieves the previous implemented version of the specification.

@param page a {@link com.atlassian.confluence.pages.Page} object.
@return the previous implemented version of the specification.