🩹 (#2719): fix interface typing

Signed-off-by: Vinicius Reis <vinicius.reis@nextcloud.com>

lib/TextFile.php

@@ -42,23 +42,24 @@ public function __construct(ISimpleFile $file, EncodingService $encodingService)
 		$this->encodingService = $encodingService;
 	}
 
-	public function getName() {
+	public function getName(): string {
 		return $this->file->getName();
 	}
 
-	public function getSize() {
+	public function getSize(): int {
 		return $this->file->getSize();
 	}
 
-	public function getETag() {
+	public function getETag(): string {
 		return $this->file->getETag();
 	}
 
-	public function getMTime() {
+	public function getMTime(): int
+	{
 		return $this->file->getMTime();
 	}
 
-	public function getContent() {
+	public function getContent(): string {
 		$content = $this->encodingService->encodeToUtf8($this->file->getContent());
 		if ($content === null) {
 			throw new NotFoundException('File not compatible with text because it could not be encoded to UTF-8.');
@@ -67,15 +68,15 @@ public function getContent() {
 		return $content;
 	}
 
-	public function putContent($data) {
-		return $this->file->putContent($data);
+	public function putContent($data): void {
+		$this->file->putContent($data);
 	}
 
-	public function delete() {
+	public function delete(): void {
 		$this->file->delete();
 	}
 
-	public function getMimeType() {
+	public function getMimeType(): string {
 		return 'text/plain;encoding=utf-8';
 	}
 
@@ -87,7 +88,7 @@ public function read() {
 		return $this->file->read();
 	}
 
-	public function write() {
+	public function write(): bool {
 		return $this->file->write();
 	}
 }