diff --git a/.travis.yml b/.travis.yml
index b84ae6feb..2619562ab 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,39 +1,39 @@
 language: php
 sudo: required
 php:
-- 5.5
-- 5.6
-- 7.0
-- 7.1
-- 7.2
-- 7.3
+  - 5.5
+  - 5.6
+  - 7.0
+  - 7.1
+  - 7.2
+  - 7.3
 
 env:
   global:
-  - RUN_PHPSTAN="FALSE"
+    - RUN_PHPSTAN="FALSE"
 
 matrix:
   include:
-  - name: 'PHPStan'
-    php: 7.2
-    env: RUN_PHPSTAN="TRUE"
+    - name: 'PHPStan'
+      php: 7.2
+      env: RUN_PHPSTAN="TRUE"
   fast_finish: true
   allow_failures:
-  - php: 5.5
+    - php: 5.5
 
 install:
-- if [ $RUN_PHPSTAN == "TRUE"  ]; then wget https://github.com/phpstan/phpstan/releases/download/0.10.3/phpstan.phar; fi
+  - if [ $RUN_PHPSTAN == "TRUE"  ]; then wget https://github.com/phpstan/phpstan/releases/download/0.10.3/phpstan.phar; fi
 
 before_script:
-- composer install
+  - composer install
 
 script:
-- if [ $RUN_PHPSTAN == "FALSE"  ]; then ./bin/phpunit --configuration tests/phpunit.xml --coverage-clover=coverage.xml; fi
-- if [ $RUN_PHPSTAN == "TRUE"  ]; then php phpstan.phar analyse -c phpstan.neon lib; fi
+  - if [ $RUN_PHPSTAN == "FALSE"  ]; then ./bin/phpunit --configuration tests/phpunit.xml --coverage-clover=coverage.xml; fi
+  - if [ $RUN_PHPSTAN == "TRUE"  ]; then php phpstan.phar analyse -c phpstan.neon lib; fi
 
 after_success:
-- bash <(curl -s https://codecov.io/bash)
+  - bash <(curl -s https://codecov.io/bash)
 
 cache:
   directories:
-  - $HOME/.composer/cache
+    - $HOME/.composer/cache
diff --git a/lib/Document.php b/lib/Document.php
index 2fb0451ae..0cb2e0978 100644
--- a/lib/Document.php
+++ b/lib/Document.php
@@ -95,13 +95,16 @@ abstract class Document extends Component
     public function __construct()
     {
         $args = func_get_args();
+        $name = static::$defaultName;
         if (0 === count($args) || is_array($args[0])) {
-            array_unshift($args, $this, static::$defaultName);
-            call_user_func_array(['parent', '__construct'], $args);
+            $children = isset($args[0]) ? $args[0] : [];
+            $defaults = isset($args[1]) ? $args[1] : true;
         } else {
-            array_unshift($args, $this);
-            call_user_func_array(['parent', '__construct'], $args);
+            $name = $args[0];
+            $children = isset($args[1]) ? $args[1] : [];
+            $defaults = isset($args[2]) ? $args[2] : true;
         }
+        parent::__construct($this, $name, $children, $defaults);
     }
 
     /**
diff --git a/lib/Parser/Json.php b/lib/Parser/Json.php
index 2062f8614..3fd307e97 100644
--- a/lib/Parser/Json.php
+++ b/lib/Parser/Json.php
@@ -4,6 +4,7 @@
 
 use Sabre\VObject\Component\VCalendar;
 use Sabre\VObject\Component\VCard;
+use Sabre\VObject\Document;
 use Sabre\VObject\EofException;
 use Sabre\VObject\ParseException;
 
@@ -43,7 +44,7 @@ class Json extends Parser
      * @param resource|string|array|null $input
      * @param int                        $options
      *
-     * @return Sabre\VObject\Document
+     * @return \Sabre\VObject\Document
      */
     public function parse($input = null, $options = 0)
     {
diff --git a/lib/Parser/MimeDir.php b/lib/Parser/MimeDir.php
index 50c5e55b8..d98225b59 100644
--- a/lib/Parser/MimeDir.php
+++ b/lib/Parser/MimeDir.php
@@ -7,6 +7,7 @@
 use Sabre\VObject\Component\VCard;
 use Sabre\VObject\Document;
 use Sabre\VObject\EofException;
+use Sabre\VObject\Node;
 use Sabre\VObject\ParseException;
 
 /**
@@ -72,7 +73,7 @@ class MimeDir extends Parser
      * @param string|resource|null $input
      * @param int                  $options
      *
-     * @return Sabre\VObject\Document
+     * @return \Sabre\VObject\Document
      */
     public function parse($input = null, $options = 0)
     {
diff --git a/lib/Parser/XML.php b/lib/Parser/XML.php
index 0a6c7b637..90f262d9e 100644
--- a/lib/Parser/XML.php
+++ b/lib/Parser/XML.php
@@ -40,7 +40,7 @@ class XML extends Parser
     /**
      * Document, root component.
      *
-     * @var Sabre\VObject\Document
+     * @var \Sabre\VObject\Document
      */
     protected $root;
 
@@ -69,7 +69,7 @@ public function __construct($input = null, $options = 0)
      *
      * @throws \Exception
      *
-     * @return Sabre\VObject\Document
+     * @return \Sabre\VObject\Document
      */
     public function parse($input = null, $options = 0)
     {
diff --git a/lib/Property/ICalendar/DateTime.php b/lib/Property/ICalendar/DateTime.php
index 5db941c1e..7eb3e0bb7 100644
--- a/lib/Property/ICalendar/DateTime.php
+++ b/lib/Property/ICalendar/DateTime.php
@@ -131,7 +131,7 @@ public function isFloating()
      *
      * @param DateTimeZone $timeZone
      *
-     * @return DateTimeImmutable
+     * @return \DateTimeImmutable
      */
     public function getDateTime(DateTimeZone $timeZone = null)
     {
@@ -152,7 +152,7 @@ public function getDateTime(DateTimeZone $timeZone = null)
      *
      * @param DateTimeZone $timeZone
      *
-     * @return DateTimeImmutable[]
+     * @return \DateTimeImmutable[]
      * @return \DateTime[]
      */
     public function getDateTimes(DateTimeZone $timeZone = null)
diff --git a/lib/Splitter/ICalendar.php b/lib/Splitter/ICalendar.php
index 0b2f8c180..79f7207fd 100644
--- a/lib/Splitter/ICalendar.php
+++ b/lib/Splitter/ICalendar.php
@@ -83,7 +83,7 @@ public function __construct($input, $options = 0)
      *
      * When the end is reached, null will be returned.
      *
-     * @return Sabre\VObject\Component|null
+     * @return \Sabre\VObject\Component|null
      */
     public function getNext()
     {
diff --git a/lib/Splitter/SplitterInterface.php b/lib/Splitter/SplitterInterface.php
index f15c5e461..a2c43d662 100644
--- a/lib/Splitter/SplitterInterface.php
+++ b/lib/Splitter/SplitterInterface.php
@@ -32,7 +32,7 @@ public function __construct($input);
      *
      * When the end is reached, null will be returned.
      *
-     * @return Sabre\VObject\Component|null
+     * @return \Sabre\VObject\Component|null
      */
     public function getNext();
 }
diff --git a/lib/Splitter/VCard.php b/lib/Splitter/VCard.php
index 953be6be2..02509c6c3 100644
--- a/lib/Splitter/VCard.php
+++ b/lib/Splitter/VCard.php
@@ -55,7 +55,7 @@ public function __construct($input, $options = 0)
      *
      * When the end is reached, null will be returned.
      *
-     * @return Sabre\VObject\Component|null
+     * @return \Sabre\VObject\Component|null
      */
     public function getNext()
     {
diff --git a/lib/TimeZoneUtil.php b/lib/TimeZoneUtil.php
index 9d2d34670..5b1a775c2 100644
--- a/lib/TimeZoneUtil.php
+++ b/lib/TimeZoneUtil.php
@@ -120,7 +120,7 @@ class TimeZoneUtil
      * @param string                  $tzid
      * @param Sabre\VObject\Component $vcalendar
      *
-     * @return DateTimeZone
+     * @return \DateTimeZone
      */
     public static function getTimeZone($tzid, Component $vcalendar = null, $failIfUncertain = false)
     {
diff --git a/lib/Writer.php b/lib/Writer.php
index b589b4cc4..c70a6ae4d 100644
--- a/lib/Writer.php
+++ b/lib/Writer.php
@@ -58,10 +58,10 @@ public static function writeXml(Component $component)
 
         if ($component instanceof Component\VCalendar) {
             $writer->startElement('icalendar');
-            $writer->writeAttribute('xmlns', Parser\Xml::XCAL_NAMESPACE);
+            $writer->writeAttribute('xmlns', Parser\XML::XCAL_NAMESPACE);
         } else {
             $writer->startElement('vcards');
-            $writer->writeAttribute('xmlns', Parser\Xml::XCARD_NAMESPACE);
+            $writer->writeAttribute('xmlns', Parser\XML::XCARD_NAMESPACE);
         }
 
         $component->xmlSerialize($writer);