code: function parseJSDocTypeExpression() {
                  var result = createNode(257 /* JSDocTypeExpression */, scanner.getTokenPos());
                  parseExpected(15 /* OpenBraceToken */);
                  result.type = parseJSDocTopLevelType();
                  parseExpected(16 /* CloseBraceToken */);
                  fixupParentReferences(result);
                  return finishNode(result);
              }
docs: Parses out a JSDoc type expression. /* @internal