Add initial Document::getAnnot support

testing/resources/javascript/document_methods_expected.txt

Index: testing/resources/javascript/document_methods_expected.txt
diff --git a/testing/resources/javascript/document_methods_expected.txt b/testing/resources/javascript/document_methods_expected.txt
index d66de8b119370afe75d6066c508aedfad7735d0e..ed601f279b20a4d0295ae24dd35a7367e3c42ebb 100644
--- a/testing/resources/javascript/document_methods_expected.txt
+++ b/testing/resources/javascript/document_methods_expected.txt
@@ -29,9 +29,6 @@ Alert: PASS: this.exportAsXFDF(1, 2, "clams", [1, 2, 3]) = undefined
 Alert: PASS: typeof this.extractPages = function
 Alert: PASS: this.extractPages() = undefined
 Alert: PASS: this.extractPages(1, 2, "clams", [1, 2, 3]) = undefined
-Alert: PASS: typeof this.getAnnot = function
-Alert: PASS: this.getAnnot() = undefined
-Alert: PASS: this.getAnnot(1, 2, "clams", [1, 2, 3]) = undefined
 Alert: PASS: typeof this.getAnnot3D = function
 Alert: PASS: this.getAnnot3D() = undefined
 Alert: PASS: this.getAnnot3D(1, 2, "clams", [1, 2, 3]) = undefined
@@ -79,6 +76,10 @@ Alert: PASS: this.addIcon(1, 2, 3) threw error Document.addIcon: Incorrect numbe
 Alert: PASS: this.addIcon("myicon", 3) threw error Document.addIcon: Incorrect parameter type.
 Alert: PASS: this.addIcon("myicon", undefined) threw error Document.addIcon: Incorrect parameter type.
 Alert: PASS: typeof this.calculateNow = function
+Alert: PASS: typeof this.getAnnot = function
+Alert: PASS: this.getAnnot() threw error Document.getAnnot: Incorrect number of parameters passed to function.
+Alert: PASS: this.getAnnot(0) threw error Document.getAnnot: Incorrect number of parameters passed to function.
+Alert: PASS: this.getAnnot(0, "test", 0) threw error Document.getAnnot: Incorrect number of parameters passed to function.
 Alert: PASS: typeof this.getField = function
 Alert: PASS: this.getField() threw error Document.getField: Incorrect number of parameters passed to function.
 Alert: PASS: typeof this.getIcon = function