Add Classification.getType()

Author: danmichaelo

CHANGELOG.md

@@ -20,7 +20,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
   - `getPartOf()` for 773 fields
 - Added a `mapSubFields()` method to the `Field` class.
 - Made the `Record` class JSON serializable.
-
+- Added a `getType()` and `getTag()` method to `Classification`.
 ### Changed
 
 - Changed the `Field::sf()` method to return `NULL`, not an empty string,

src/Fields/Classification.php

@@ -8,6 +8,11 @@ class Classification extends Subfield implements \JsonSerializable
 {
     use SerializableField;
 
+    const UDC = '080';
+    const DEWEY = '082';
+    const ADD_DEWEY = '082';
+    const OTHER_SCHEME = '084';
+
     /**
      * @var array List of properties to be included when serializing the record using the `toArray()` method.
      */
@@ -25,6 +30,16 @@ public static function get(Record $record)
         return $out;
     }
 
+    public function getType()
+    {
+        return $this->getTag();
+    }
+
+    public function getTag()
+    {
+        return $this->field->getTag();
+    }
+
     public function getScheme()
     {
         $typeMap = [