code: public String getHome() {
  
          if (m_homeFolderPath == null) {
              if (CmsStringUtil.isNotEmpty(System.getProperty(SOLR_HOME_PROPERTY))) {
                  m_home = System.getProperty(SOLR_HOME_PROPERTY);
              } else {
                  m_home = OpenCms.getSystemInfo().getAbsoluteRfsPathRelativeToWebInf(SOLR_HOME_DEFAULT);
              }
              m_home = (m_home.endsWith(File.separator)
              ? m_home.substring(0, m_home.lastIndexOf(File.separator))
              : m_home);
          } else {
              m_home = m_homeFolderPath;
          }
          return m_home;
      }
docs: Returns the home directory of Solr as String.<p>
  
  @return the home directory of Solr as String