Adding loadStudy method to StudyMetadataSource API

Packages/ohif-viewerbase/client/lib/classes/StudyMetadataSource.js

@@ -6,19 +6,8 @@ import { OHIFError } from './OHIFError';
 export class StudyMetadataSource {
 
     /**
-     * Get study metadata for a given study info
-     * @param  {Object} studyInfo Study info object
-     */
-    getByStudyInfo(studyInfo) {
-        /**
-         * Please override this method on a specialized class.
-         */
-        throw new OHIFError('StudyMetadataSource::getByStudyInfo is not overriden. Please, override it in a specialized class. See OHIFStudyMetadataSource for example');
-    }
-
-    /**
-     * Get study metadata for a study with given study InstanceUID
-     * @param  {String} studyInstanceUID Study InstanceUID
+     * Get study metadata for a study with given study InstanceUID.
+     * @param {String} studyInstanceUID Study InstanceUID.
      */
     getByInstanceUID(studyInstanceUID) {
         /**
@@ -26,4 +15,16 @@ export class StudyMetadataSource {
          */
         throw new OHIFError('StudyMetadataSource::getByInstanceUID is not overriden. Please, override it in a specialized class. See OHIFStudyMetadataSource for example');
     }
-}
+
+    /**
+     * Load study info and study metadata for a given study into the viewer.
+     * @param {StudySummary|StudyMetadata} study of StudySummary or StudyMetadata object.
+     */
+    loadStudy(study) {
+        /**
+         * Please override this method on a specialized class.
+         */
+        throw new OHIFError('StudyMetadataSource::loadStudy is not overriden. Please, override it in a specialized class. See OHIFStudyMetadataSource for example');
+    }
+
+}