Add size() method to the Schedule class

opm/parser/eclipse/EclipseState/Schedule/Schedule.hpp

@@ -127,7 +127,7 @@ namespace Opm
           active. Will scan through all wells and all timesteps.
         */
         void filterConnections(const EclipseGrid& grid);
-
+        size_t size() const;
     private:
         TimeMap m_timeMap;
         OrderedMap< Well > m_wells;

src/opm/parser/eclipse/EclipseState/Schedule/Schedule.cpp

@@ -1883,5 +1883,11 @@ namespace Opm {
         const auto& ptr = this->wtest_config.get(timeStep);
         return *ptr;
     }
+
+
+    size_t Schedule::size() const {
+        return this->m_timeMap.size();
+    }
+
 }