Add comments about why we need two methods that return compilerOptions

src/server/project.ts

@@ -242,12 +242,14 @@ namespace ts.server {
             this.markAsDirty();
         }
 
+        // Method of LanguageServiceHost
         getCompilationSettings() {
             return this.compilerOptions;
         }
 
+        // Method to support public API
         getCompilerOptions() {
-            return this.compilerOptions;
+            return this.getCompilationSettings();
         }
 
         getNewLine() {