code: public void addGlobalVarPasswordPair(VarPasswordPair varPasswordPair) {
          // blank values are forbidden
          if(StringUtils.isBlank(varPasswordPair.getVar()) || StringUtils.isBlank(varPasswordPair.getPassword())) {
              LOGGER.fine("addGlobalVarPasswordPair NOT adding pair with null var or password");
              return;
          }
          getGlobalVarPasswordPairsList().add(varPasswordPair);
      }
docs: Adds a name/password pair at the global level.
  
  <p>If either name or password is blank (as defined per the Commons Lang
  library), then the pair is not added.</p>
  
  @since 2.7