Add external reference to EnvironmentalConditions, Occupant, LaneBoundary.

Signed-off-by: Georg Seifert <georg.seifert@carissma.eu>

Author: DerBaertige

osi_environment.proto

@@ -85,6 +85,19 @@ message EnvironmentalConditions
     // Description of the fog.
     //
     optional Fog fog = 7;
+    
+    // External Reference to the Environmental Condition Sources
+    //
+    // \note For OpenDRIVE and OpenSECNARIO there is no no direct counterpart.
+    //
+    // \note For non-ASAM Standards, it is implementation-specific how
+    //       source_reference is resolved.
+    //
+    // \note The value has to be repeated, as it cannot guarantee, that one
+    //       object is derived from only one origin source, like from one 
+    //       scernario file and and from the sensors.
+    //
+    repeated ExternalReference source_reference = 8;
 
     // Definition of discretized precipitation states according to [1].
     // (I = Intensity of precipitation in mm per hour mm/h)

osi_lane.proto

@@ -53,7 +53,7 @@ message Lane
     // External Reference to the Lane Source
     //
     // The ExternalReference point to the source of the lane, if it is derived
-    // from one or more objects or external references. An exaple here is the 
+    // from one or more objects or external references. An example here is the 
     // reference to the lane defined in a OpenDRIVE map.
     //
     // For OpenDRIVE 1.6 the items should be set as following:
@@ -749,6 +749,20 @@ message LaneBoundary
     // The classification of the lane boundary.
     //
     optional Classification classification = 3;
+    
+    // External Reference to the Lane Boundary Source
+    //
+    // \note For OpenDRIVE 1.6 there is no direct possibility to reference the
+    //       RoadMark, as there is no unique identifier in this sub-object.
+    //
+    // \note For non-ASAM Standards, it is implementation-specific how
+    //       source_reference is resolved.
+    //
+    // \note The value has to be repeated, as it cannot guarantee, that one
+    //       object is derived from only one origin source, like from one 
+    //       scernario file and and from the sensors.
+    //
+    repeated ExternalReference source_reference = 3;
 
     //
     // \brief A single point of a lane boundary.

osi_occupant.proto

@@ -23,6 +23,19 @@ message Occupant
     //
     optional Classification classification = 2;
 
+    // External Reference to the Occupant Source
+    //
+    // \note For OpenDRIVE and OpenSECNARIO there is no no direct counterpart.
+    //
+    // \note For non-ASAM Standards, it is implementation-specific how
+    //       source_reference is resolved.
+    //
+    // \note The value has to be repeated, as it cannot guarantee, that one
+    //       object is derived from only one origin source, like from one 
+    //       scernario file and and from the sensors.
+    //
+    repeated ExternalReference source_reference = 3;
+
     //
     // \brief Information regarding the classification of the occupant.
     //