code: public static boolean isProvider(String templatePath) {
  
          if (CmsStringUtil.isEmptyOrWhitespaceOnly(templatePath)) {
              return false;
          }
          templatePath = templatePath.trim();
          return templatePath.startsWith(DYNAMIC_TEMPLATE_LEGACY_PREFIX)
              || templatePath.startsWith(DYNAMIC_TEMPLATE_PREFIX);
      }
docs: Checks if a template property value refers to a  template context provider.<p>
  
  @param templatePath the template property value
  @return true if this value refers to a template context provider