code: public boolean getBoolean(@NotNull final String key, boolean defaultValue) throws InvalidSettingException {
          return Boolean.parseBoolean(getString(key, Boolean.toString(defaultValue)));
      }
docs: Returns a boolean value from the properties file. If the value was
  specified as a system property or passed in via the
  <code>-Dprop=value</code> argument this method will return the value from
  the system properties before the values in the contained configuration
  file.
  
  @param key the key to lookup within the properties file
  @param defaultValue the default value to return if the setting does not
  exist
  @return the property from the properties file
  @throws org.owasp.dependencycheck.utils.InvalidSettingException is thrown
  if there is an error retrieving the setting