comments

application/Espo/Core/Field/Date.php

@@ -167,6 +167,9 @@ class Date implements DateTimeable
         return self::fromDateTime($dateTime);
     }
 
+    /**
+     * A difference between another object (date or date-time) and self.
+     */
     public function diff(DateTimeable $other): DateInterval
     {
         return $this->getDateTime()->diff($other->getDateTime());

application/Espo/Core/Field/DateTime.php

@@ -199,6 +199,9 @@ class DateTime implements DateTimeable
         return self::fromDateTime($dateTime);
     }
 
+    /**
+     * A difference between another object (date or date-time) and self.
+     */
     public function diff(DateTimeable $other): DateInterval
     {
         return $this->getDateTime()->diff($other->getDateTime());

application/Espo/Core/Field/DateTimeOptional.php

@@ -262,6 +262,9 @@ class DateTimeOptional implements DateTimeable
         );
     }
 
+    /**
+     * A difference between another object (date or date-time) and self.
+     */
     public function diff(DateTimeable $other): DateInterval
     {
         return $this->getDateTime()->diff($other->getDateTime());