/**
  * @test
  */
 public function setDataTypeProvidesFluentInterfaceAndReallySetsDataType()
 {
     $returnedArgument = $this->simpleValueArgument->setDataType('integer');
     $this->assertSame($this->simpleValueArgument, $returnedArgument, 'The returned argument is not the original argument.');
     $this->assertSame('integer', $this->simpleValueArgument->getDataType(), 'The got dataType is not the set dataType.');
 }