fixed PY-10230 Decorator reference in doctest is unresolved

python/src/com/jetbrains/python/documentation/doctest/PyDocstringParsingContext.java

@@ -14,25 +14,25 @@ import org.jetbrains.annotations.Nullable;
  * User : ktisha
  */
 public class PyDocstringParsingContext extends ParsingContext {
-  private final StatementParsing stmtParser;
-  private final ExpressionParsing exprParser;
+  private final StatementParsing myStatementParser;
+  private final ExpressionParsing myExpressionParser;
 
   public PyDocstringParsingContext(final PsiBuilder builder,
                                    LanguageLevel languageLevel,
                                    StatementParsing.FUTURE futureFlag) {
     super(builder, languageLevel, futureFlag);
-    stmtParser = new PyDocstringStatementParsing(this, futureFlag);
-    exprParser = new PyDocstringExpressionParsing(this);
+    myStatementParser = new PyDocstringStatementParsing(this, futureFlag);
+    myExpressionParser = new PyDocstringExpressionParsing(this);
   }
 
   @Override
   public ExpressionParsing getExpressionParser() {
-    return exprParser;
+    return myExpressionParser;
   }
 
   @Override
   public StatementParsing getStatementParser() {
-    return stmtParser;
+    return myStatementParser;
   }
 
   private static class PyDocstringExpressionParsing extends ExpressionParsing {
@@ -53,6 +53,11 @@ public class PyDocstringParsingContext extends ParsingContext {
       super(context, futureFlag);
     }
 
+    @Override
+    protected IElementType getReferenceType() {
+      return PyDocstringTokenTypes.DOC_REFERENCE;
+    }
+
     @Override
     public IElementType filter(IElementType source, int start, int end, CharSequence text) {
       if (source == PyTokenTypes.DOT && CharArrayUtil.regionMatches(text, start, end, "..."))