PEL: LightPath: Assert LED groups

Fill in the functions to get the LED group D-Bus paths corresponding to
the called out location codes, and then set the Asserted property on
that path to turn on the LEDs.

If there are any problems looking up any of the LED groups, then do not
turn on any LEDs at all, even if others were OK.  In this case, the
system attention indicator will be turned on instead.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I7e3ee6259d972dd2c6939c5a1004c6d25c40e38a
diff --git a/extensions/openpower-pels/service_indicators.hpp b/extensions/openpower-pels/service_indicators.hpp
index 292c30d..522f3db 100644
--- a/extensions/openpower-pels/service_indicators.hpp
+++ b/extensions/openpower-pels/service_indicators.hpp
@@ -123,13 +123,20 @@
 
   private:
     /**
-     * @brief Description TODO
+     * @brief Returns the LED group D-Bus paths to use to turn on the
+     *        LEDs for the passed in location codes.
+     *
+     * @param[in] locationCodes - The location codes
+     *
+     * @return std::vector<std::string> - The LED group D-Bus paths
      */
     std::vector<std::string>
         getLEDGroupPaths(const std::vector<std::string>& locationCodes) const;
 
     /**
-     * @brief Description TODO
+     * @brief Sets the Assert property on the LED group D-Bus objects
+     *
+     * @param[in] std::vector<std::string> - The LED group D-Bus paths
      */
     void assertLEDs(const std::vector<std::string>& ledGroups) const;