diff --git a/src/implementation/AbstractImplementation.php b/src/implementation/AbstractImplementation.php
index 34418d0..90084a0 100644
--- a/src/implementation/AbstractImplementation.php
+++ b/src/implementation/AbstractImplementation.php
@@ -119,6 +119,7 @@ public function setLine(array $line, array $params = [])
     public function setDimensions(array $dimensions)
     {
         $this->dimensions = array_values($dimensions);
+        return $this;
     }
 
     /**