getLabel() removed return type void [Closes #241]

Author: dg

src/Forms/Controls/BaseControl.php

@@ -266,7 +266,7 @@ public function getControl()
 	/**
 	 * Generates label's HTML element.
 	 * @param  string|object  $caption
-	 * @return Html|string
+	 * @return Html|string|null
 	 */
 	public function getLabel($caption = null)
 	{

src/Forms/Controls/Button.php

@@ -41,7 +41,7 @@ public function isFilled(): bool
 	/**
 	 * Bypasses label generation.
 	 */
-	public function getLabel($caption = null): void
+	public function getLabel($caption = null)
 	{
 	}
 

src/Forms/Controls/Checkbox.php

@@ -70,7 +70,7 @@ public function getControl(): Html
 	/**
 	 * Bypasses label generation.
 	 */
-	public function getLabel($caption = null): void
+	public function getLabel($caption = null)
 	{
 	}
 

src/Forms/Controls/HiddenField.php

@@ -107,7 +107,7 @@ public function getControl(): Nette\Utils\Html
 	 * Bypasses label generation.
 	 * @param  string|object  $caption
 	 */
-	public function getLabel($caption = null): void
+	public function getLabel($caption = null)
 	{
 	}