CLI: API templates

Core/Driver/SQL/MySQL.class.php

@@ -510,7 +510,7 @@ class RowIteratorMySQL extends RowIterator {
     return $row;
   }
 
-  public function rewind() {
+  public function rewind(): void {
     if ($this->useCache) {
       $this->rowIndex = 0;
     } else if ($this->rowIndex !== 0) {

Core/Driver/SQL/RowIterator.class.php

@@ -21,15 +21,15 @@ abstract class RowIterator implements \Iterator {
   protected abstract function getNumRows(): int;
   protected abstract function fetchRow(int $index): array;
 
-  public function current() {
+  public function current(): array {
     return $this->fetchRow($this->rowIndex);
   }
 
-  public function next() {
+  public function next(): void {
     $this->rowIndex++;
   }
 
-  public function key() {
+  public function key(): int {
     return $this->rowIndex;
   }