code: private String getBinaryAttributes() {
  
          // Add binary settings for all octet string attributes.
          StringBuffer binaryAttrNamesBuffer = new StringBuffer();
  
          // Check the ldap data type of the extId attribute.
          Map<String, LdapAttribute> attrMap = iLdapConfigMgr.getAttributes();
  
          for (String attrName : attrMap.keySet()) {
              LdapAttribute attr = attrMap.get(attrName);
              if (LdapConstants.LDAP_ATTR_SYNTAX_OCTETSTRING.equalsIgnoreCase(attr.getSyntax())) {
                  binaryAttrNamesBuffer.append(attr.getName()).append(" ");
              }
          }
  
          return binaryAttrNamesBuffer.toString().trim();
      }
docs: Get the list of configure binary attributes.
  
  @return A white-space delimited string of binary attribute names, suitable for use
  configuring JNDI.