code: protected void installServerAssembly() throws Exception {
          if (installType == InstallType.ALREADY_EXISTS) {
              log.info(MessageFormat.format(messages.getString("info.install.type.preexisting"), ""));
          } else {
              if (installType == InstallType.FROM_ARCHIVE) {
                  installFromArchive();
              } else {
                  installFromFile();
              }
              installLicense();
          }
      }
docs: Performs assembly installation unless the install type is pre-existing.
  
  @throws Exception