code: public boolean canBeImplemented(Page page) {
          Integer implementedVersion = getImplementedVersion(page);
          return implementedVersion == null || page.getVersion() != implementedVersion;
      }
docs: Verifies if the specification can be Implemented.
  
  @param page a {@link com.atlassian.confluence.pages.Page} object.
  @return true if the specification can be Implemented.